647 results about "Immunofluorescence" patented technology

There is proposed a method for detecting a presence of a fluorescence pattern type on an organ segment via immunofluorescence microscopy and digital image processing. The steps comprise: provision of the organ segment, incubation of the organ segment with a liquid patient sample, incubation of the organ segment with secondary antibodies which have been labelled with a fluorescent dye, acquisition of a fluorescence image of the organ segment in a colour channel corresponding to the fluorescent dye, and provision of the fluorescence image to a neural network. What takes place by means of the neural network is simultaneous determination of segmentation information through segmentation of the fluorescence image and, furthermore, of a measure of confidence indicating an actual presence of the fluorescence pattern type. What further takes place is determination, on the basis of the previously determined segmentation information, of at least one sub-area of the fluorescence image that is relevant to formation of the fluorescence pattern type, determination, on the basis of the previously determined at least one sub-area, of validity information indicating a degree of a validity of the measure of confidence, and output of the measure of confidence depending on the validity information.

The invention relates to an anti-VIM nano antibody and application thereof, belongs to the technical field of biology, and aims to solve the problem of Vimentin VIM detection, and has the key points that a complementary determining region CDR of the nano antibody comprises CDR1, CDR2 and CDR3 sequences: (I): (1) the amino acid sequence of the CDR1 is shown as SEQ ID NO.27, and (2) the amino acid sequence of the CDR2 is shown as SEQ ID NO.33; and (3) the amino acid sequence of the CDR3 is shown as SEQ ID NO.39. The nano antibody and the polypeptide thereof have the effects that the nano antibody and the polypeptide thereof have very high affinity and activity, can specifically recognize and combine with VIM, can be used for capturing and detecting VIM positive cells, and can be applied to immunofluorescence analysis or immunohistochemical analysis and the like through a proper antibody labeling technology.

The invention provides a multi-modal kidney pathological picture processing method and device, electronic equipment and a medium. The method comprises the following steps: acquiring an immunofluorescence picture included in a to-be-processed multi-modal kidney pathological picture and a PAS staining pathological picture corresponding to the immunofluorescence picture; inputting the immunofluorescence pictures into a pre-trained first network model to perform nephropathy type classification to obtain nephropathy types; judging whether the nephropathy type output by a pre-trained first network model belongs to a preset nephropathy type or not; inputting a PAS staining pathological picture corresponding to the immunofluorescence picture into a pre-trained second network model for pathological structure identification when the immunofluorescence picture belongs to the preset nephropathy type, and outputting a label for the identified pathological structure; and adding an Oxford typing label to the to-be-processed multi-modal kidney pathological picture based on a label and a pathological structure output by a pre-trained second network model. According to the scheme, the nephropathy type can be automatically distinguished, the Oxford typing label is added, the processing speed is high, and the accuracy rate is high.

The invention belongs to the technical field of tumor micro-immune environments, and particularly relates to a kit for detecting a tumor micro-environment, a detection method and application, the kit comprises rare metal element labeled monoclonal antibodies, the rare metal element labeled monoclonal antibodies comprise 115In-CD20, 139La-Histone H3, 142Nd-CD56, 144Nd-CD14, 146Nd-Vimentin, 148Nd-Pan-CK, 151Eu-CD31, 156Gd-CD4, 158Gd-E-Cadrin, 159Tb-CD68, 162Dy-CD8a, 166Er-CD45, 167Er-CD15, 170Er-CD3, 171Yb-CD11c and 209Bi-alpha-SMA, and the rare metal element labeled monoclonal antibodies comprise The invention can be used for simultaneously detecting and researching the quantity, positioning and spatial topological relation of each cell component in a tumor microenvironment, and provides a multi-immunofluorescence detection kit and method for ubiquitous epithelial differentiation-derived tumors based on an imaging mass spectrum flow technique. A plurality of biomarkers can be analyzed at the same time by using multiple immunohistochemical staining and rare earth metal tag signal detection technologies, so that the aim of performing high-dimensional analysis on a tumor microenvironment is fulfilled according to cell composition, functional state and cell-cell space interaction relationship.

The invention relates to a detection system, which comprises a detector and a detection card, a detection assembly of the detector comprises a transmission module, a test module and an exit module, the transmission module comprises a circular turntable, the turntable is provided with at least three test channels, the test channels are uniformly distributed on the turntable in a star shape, and the exit module is connected with the detection module. One end of each test channel is close to the center of the rotary table, the other end of each test channel extends to the periphery of the rotary table, a detection card can be inserted into each test channel, at least two marks are arranged on each detection card, and the detection assembly comprises mark recognition parts with the number equal to that of the marks on the detection cards. And the identification identification parts sequentially identify the identification on the detection card to form a signal combination and transmit the signal combination to a control system of the detector. According to the detection system and the detector, multi-channel testing is achieved, and the testing speed is increased. And the requirement of accurate positioning of the analysis system is met. The method can be used for detection platforms for immunofluorescence analysis, immunoturbidimetric analysis, dry biochemical analysis and the like.

The invention relates to the technical field of plants, in particular to a paraffin embedding method for reducing plant RNA degradation. In the plant paraffin embedding method provided by the invention, a stationary liquid for fixing plant tissues is prepared from absolute ethyl alcohol and acetic acid in a volume ratio of (2-5): (1-4); buffer I used for dehydration is absolute ethyl alcohol and n-butyl alcohol with the volume ratio of (1-3): (1-2); buffer II used for waxing is n-butyl alcohol and low-temperature paraffin wax with the volume ratio of (1-3): (1-2), and the melting point of the paraffin wax is 20-50 DEG C. According to the method, low-temperature paraffin with the melting point of 20-50 DEG C is adopted, and a reagent for paraffin embedding and a paraffin embedding process are adjusted, so that the plant section with relatively high RNA integrity and relatively high tissue structure integrity is obtained. The paraffin embedding method provided by the invention is suitable for different types of molecular biology experiments of space transcriptome, immunohistochemistry, immunofluorescence and the like.

The invention discloses a quantitative detection method for sweat gland cholinergic nerves of a neuron intracellular inclusion body disease. Belongs to the technical field of biological science. Performing immunohistochemical staining; scanning a slide; and calculating the density of the cholinergic nerve fiber. The invention relates to a simple and feasible method for quantitatively evaluating cholinergic nerve fibers of a neuron intracellular inclusion body disease. The method comprises the following steps: carrying out skin biopsy on control receptors of a neuron intranuclear inclusion body disease and a nervous system-free disease, slicing, carrying out immunofluorescent staining by using a VIP antibody, quantitatively calculating the density of cholinergic nerve fibers labeled by the sweat gland VIP antibody in dermis by using Image J software, analyzing whether the cholinergic nerve fibers have differences in the two groups of receptors, and if so, determining whether the cholinergic nerve fibers have differences in the two groups of receptors. Evaluating the nervous injury and severity of the cholinergic nerve; the invention provides a new way for accurately evaluating the autonomic nerve injury and severity of the neuronal intracellular inclusion body disease.

The invention discloses an NF (nuclear factor)-kappa B inhibitor. The NF-kappa B inhibitor comprises N-trans-p-coumaroyl tyramine; the invention further discloses a preparation method of the NF-kappa B inhibitor. The invention also discloses an application of the NF-kappa B inhibitor in medicines for preventing or treating diseases related to body inflammation. According to the application disclosed by the invention, the influence of the N-trans-p-coumaroyl tyramine on a TLR4 / MyD88 / NF-kappa B inflammation signal channel is detected through an immunofluorescence technology, and a result shows that the N-trans-p-coumaroyl tyramine can be used for reducing the expression of TLR4 and MyD88 proteins and inhibiting the transfer of NF-kappa B proteins to cell nucleuses, so that the N-trans-p-coumaroyl tyramine can be used as an NF-kappa B inhibitor and can be used for preparing an anti-inflammatory drug. The composition is used for preventing or treating body inflammatory response.

The invention provides a storage system for immunofluorescence slide glass and an intelligent temperature and humidity coupling control method thereof. The system comprises a closed sample cabin, a controller, a passive buffer layer and other structures, and the temperature and humidity in the cabin can be stably controlled in a dynamic environment. The temperature and humidity in the cabin and the temperature of the key cold surface are monitored in real time through the sensing unit, the local dew point is calculated, and temperature and humidity control is executed. And the controller executes a layered gradient coupling control algorithm according to the dynamic dew point safety margin to ensure accurate control of temperature and humidity. The passive buffer layer is of a composite structure of a phase change material and a moisture absorption material, and the temperature and humidity are adjusted through solid-liquid phase change and molecular adsorption. The system can effectively improve the storage stability and safety of the immunofluorescence slide, and is suitable for sample storage management in industries such as life science and biological pharmacy.

The invention belongs to the technical field of medical diagnosis, and discloses a quantum multicolor immune digital pathological diagnosis analysis system, which comprises the following steps: acquiring high-resolution digital images of an immunohistochemical or immunofluorescence slice and a slide, and analyzing multicolor signal distribution in the images to obtain a quantum chromatographic image set; pixel-level color separation and intensity quantization are carried out on the quantum chromatographic image set, and a quantum intensity index set of each pixel is generated; performing multi-target color overlay analysis and post-translational modification protein specificity evaluation on the quantum intensity index set to construct a multi-color modification index set; identifying a single cell boundary and a multi-cell community based on the multicolor modification index set, and extracting a cell morphological parameter and a spatial adjacency relation to obtain a cell quantum analysis set; performing consistency correction and traceable recording by applying an automatic quality control mechanism, and generating a digital diagnosis report; the accuracy of accurate qualitative and quantitative analysis of immunohistochemistry and immunofluorescence is greatly improved.

The invention provides a full-automatic indirect immunofluorescence interpretation method and system, a storage medium and a program product, and relates to the technical field of indirect immunofluorescence detection.The method comprises the steps that when identification information of a target sample is obtained, a plurality of sealed antigen slides are placed in slide carrying groove positions of a bearing platform in batches, and the target sample is obtained; driving the bearing platform through the transmission mechanism to sequentially move the plurality of antigen slides to the imaging area, and performing positioning and fixing operation on the antigen slides entering the imaging area by using the positioning and clamping device; sequentially carrying out multi-view scanning on the antigen slides entering the imaging area to obtain multi-view fluorescence images, and splicing the fluorescence images to generate a fluorescence panoramic image; performing feature extraction on the panoramic image, determining a fluorescence karyotype category and a target fluorescence intensity value, and determining an antibody titer according to the category, the intensity value and dilution information; and performing association mapping on the titer, the category and the panoramic image according to the identification information to generate a fluorescence interpretation result.

The invention relates to the field of molecular cytogenetics and potato ploidy breeding, in particular to a potato ploidy identification method for marking and counting chromosome centromere based on a potato CENH3 antibody and a ploidy detection kit. According to the method, the chromosome centromere is marked by specifically recognizing the antibody of the potato centromere nucleosome core histone CENH3 and combining the immunofluorescence technology, so that the accurate counting of the chromosome centromere is realized at the single cell level, and the ploidy of potatoes is judged. The method comprises the following steps: preparing a leaf cell suspension, sequentially incubating a potato CENH3 antibody and a labeled secondary antibody after immobilization, and observing and counting by a microscope after redyeing. The method has the advantages of high species specificity, high throughput and low cost, is not limited by special material taking parts of root tips or shoot tips and cell division periods, can accurately identify the uploid and aneuploid of potatoes, and provides an efficient tool for potato germplasm resource evaluation and cross breeding.

The invention relates to the technical field of life science, in particular to a method for constructing an atrophic gastritis-based SPEM lesion model, which comprises the following steps: S1, constructing an Slc7a11 conditional knockout mouse strain: carrying out cage hybridization on an Slc7a11 flox / flox mouse and an ATP4b-Cre transgenic mouse, and knocking out a gastric wall cell specific Slc7a11 gene; s2, carrying out genotyping identification; the identification method based on the atrophic gastritis SPEM lesion model and the construction method based on the atrophic gastritis SPEM lesion model comprise the following steps: S1, pathological model verification: taking a mouse gastric mucosa tissue slice, quantitatively analyzing the proportion of an SPEM region by adopting an immunofluorescence double-standard technology, and confirming Slc7a11 knockout induced SPEM pathological characteristics in combination with the existence of SPEM in the gastric mucosa; and S2, long-term pathology evolution monitoring. Through gastric wall cell specific Slc7a11 gene knockout and multiple PCR identification technologies, the initial response SPEM state after gastric mucosa damage is successfully simulated, and the kit is used for researching atrophic gastritis pathological mechanisms and evaluating drug intervention.

The invention provides an application of dihydroflavonoid compound naringin in promoting proliferation and differentiation of porcine muscle stem cells to form myotubes, which is characterized in that the naringin is added into a DMEM / F12 culture medium containing 15% of fetal calf serum and 1% of double antibodies and a DMEM differential culture medium containing 2% of horse serum and 1% of double antibodies until the final concentration is 70 mu M, and the porcine muscle stem cells are respectively treated in proliferation and differentiation stages, hoechst 33342 staining and immunofluorescence staining methods are used for respectively judging the number of cells in the proliferation stage and the fluorescence area, fluorescence intensity and nuclear fusion rate of Myosin in myotubes formed in the differentiation stage. The relative proliferation multiple of the muscle stem cells treated by adding naringin and the fluorescence area, the fluorescence intensity and the nuclear fusion rate of Myosin in myotubes are obviously higher than those of a blank control group. By adopting the method, proliferation and differentiation of the porcine muscle stem cells can be promoted, and a new thought is provided for maintaining cell dryness and large-scale production of cultured meat.

The present invention relates to RyR1 antigens, antigen expression genes, antigen expression vectors, cell lines and uses. The present invention provides two effective antigens for detecting anti-RyR1 autoantibodies: MGTR1 and MGTR2, which have the characteristics of small molecule size and good expression. Expression plasmids carrying the MGTR1 and MGTR2 genes are transfected into cell lines to prepare cell-based detection materials. The prepared detection materials have good sensitivity, specificity and stability for RyR1 antibodies. The indirect immunofluorescence method using cells is used to screen for anti-RyR1 autoantibodies in MG patients and MG patients with thymoma. Based on the RyRl cell detection matrix material, a two-color fluorescence system is adopted, and its co-localization effect is good. Therefore, it has good sensitivity, specificity and stability. The RyR1 cell detection matrix of the present invention can meet the needs of auxiliary clinical diagnosis.

The monoclonal antibody of the glycoprotein Gn of the severe fever with thrombocytopenia syndrome virus is screened on the basis of immune repertoire sequencing, and the biological characteristics of the monoclonal antibody are identified. The method comprises the following steps: taking purified SFTSV-Gn as bait, taking virus specific B cells from an immunized female BALB / c mouse B cell bank, selecting an antibody sequence with potential binding activity by utilizing a 10 * immune repertoire sequencing method in combination with bioinformatics analysis, constructing the antibody sequence to an eukaryotic expression vector pcDNA3.4, expressing and purifying a monoclonal antibody, and identifying the biological activity of the monoclonal antibody. 14 antibodies are selected from 3544 captured B cells, functional verification shows that 12 antibodies can be combined with SFTSV-Gn glycoprotein, and the Gn-5 antibody and the Gn-7 antibody have high combining capacity; western blot, indirect immunofluorescence test and flow cytometry prove that the antibody can specifically recognize the SFTSV, the effective concentration is as low as 2 mu g / mL, and a foundation is laid for development of a rapid diagnosis reagent for the SFTSV.

The invention discloses a novel nano-drug as well as a preparation method and application thereof, and co-delivery of siRNA and 3BP is realized on an exosome nano-platform, so that a novel nano-drug Exo (at) siRNA / 3BP-CTX (ERBC) engineering exosome is generated. The surface-modified cetuximab (CTX) is targeted to tumors, and shows high targeting and low toxicity in imaging analysis. CCK-8, western blot and immunofluorescence detection are used for detecting the tumor killing effect and the synergistic effect. The ERBC finds that the occurrence of death-promoting autophagy in KRAS mutation tumors is promoted on the transmission electron microscope (TEM) and molecular level.

The invention discloses an immunofluorescence analysis and detection device, and relates to the technical field of detection instruments. According to the device, a plurality of containing discs containing first reactants are put into a conveying channel, and a first conveying assembly sequentially conveys the containing discs sliding out of the conveying channel to a first station; then a plurality of test tubes containing second reactants are placed on the mounting frame from the discharging opening, the rotating assembly drives the mounting frame to rotate, when one test tube is moved to the discharging opening, the test tube is separated from the mounting groove and penetrates through the discharging opening to abut against the pouring assembly, and the pouring assembly drives the test tube to incline so that the second reactants can be poured into the containing disc at the first station; the first reactant and the second reactant are mixed to form a to-be-detected object, at the moment, the first conveying assembly conveys the to-be-detected object to the second station, and then the second conveying assembly conveys the to-be-detected object to the detector for detection. The immunofluorescence analysis and detection device mixes a batch of first reactant and a batch of second reactant and then sends the mixture to the detector for detection, and the detection efficiency is high.

The invention discloses an anti-soluble transferrin receptor monoclonal antibody as well as a preparation method and application thereof, and belongs to the technical field of antibody detection. According to the antibody, an L101-F760 amino acid sequence of human TfR protein is used as an immunogen, specific screening of B cells, reverse RNA (Ribonucleic Acid) into cDNA (Complementary Deoxyribose Nucleic Acid) through RT-PCR (Reverse Transcription-Polymerase Chain Reaction), then homologous recombination is performed to construct heavy and light chain vectors, and finally multiple rounds of screening are performed to obtain the purified sTfR monoclonal antibody, so that the sTfR protein can be specifically recognized, and the antibody has the advantages of high specificity and high sensitivity and can be widely applied to the field of immunotherapy. The natural sTfR protein in human serum can be recognized. The kit is applied to the detection and screening fields of immunohistochemistry, immunofluorescence chemistry, western blot, co-immunoprecipitation, indirect ELISA, flow cytometry and the like, especially has low background and no interference of non-specific binding impure protein during immunohistochemistry detection, can obtain more accurate detection and evaluation results, avoids interference of false positive and false negative, and has high detection accuracy. The method has great application value in the aspects of basic scientific research and clinical pathology detection.

The invention provides a prostate lesion tissue immunofluorescence detection kit and a detection method, and belongs to the technical field of kits. The kit is prepared from the following raw materials in parts by weight: 40 to 60 parts of TYR-xxxPlus fluorescent dye, 30 to 45 parts of TSA Buffer, 20 to 40 parts of Polymer-HRP monoclonal antibody mouse / rabbit second antibody, 15 to 30 parts of antibody, 5 to 15 parts of Dapi dye liquor, 50 to 70 parts of antibody diluent and 50 to 70 parts of peroxidase confining liquid. According to the kit, a non-biotin amplification system is adopted, so that compared with a traditional double-staining experiment, the experiment time is greatly shortened, and interference of endogenous biotin is effectively avoided. The method is suitable for diagnosis and differential diagnosis of prostate cancer, PIN and AAH of prostate resection specimens, acupuncture biopsy specimens, electric resection specimens and transurethral resection specimens, and is particularly suitable for conventional formalin fixed paraffin embedded sections.

The invention discloses an IgA nephropathy prognosis method, system and device based on multi-modal data, and belongs to the technical field of image data processing, the method comprises the following steps: collecting historical data including clinical data and an IgA immunofluorescence map; based on a visual identification method, pathological features are extracted from the IgA immunofluorescence image; screening clinical characteristics; based on a machine learning method, the training set is trained according to pathological features and clinical features, a prognosis model is obtained, and the prognosis model is used for IgA nephropathy prognosis. On the basis of a computer vision method, pathological features are extracted from an IgA immunofluorescence map, and the prognosis of the IgA nephropathy is predicted in combination with clinical features, so that automatic prediction is facilitated, mistakes and omissions caused by artificial naked eye recognition are avoided, stable prediction ability is expressed, and multi-modal data fusion reflects a gain effect on long-term prognosis prediction.

The invention relates to the field of biology, and provides a human immortalized pancreatic cancer fibroblast as well as a preparation method and application thereof.The human immortalized pancreatic cancer fibroblast comprises three cell strains which are all primary fibroblast cells extracted from tumor tissues of pancreatic ductal adenocarcinoma patients, the human pancreatic cancer fibroblast cell strain CAFPC-2209131, the human pancreatic cancer fibroblast cell strain CAFPC-2209132 and the human pancreatic cancer fibroblast cell strain CAFPC-2303221 are classified and named as the human pancreatic cancer fibroblast cell strain CAFPC-2209131, the human pancreatic cancer fibroblast cell strain CAFPC-2209132 and the human pancreatic cancer fibroblast cell strain CAFPC-2303221 respectively, the human pancreatic cancer fibroblast cell strain CAFPC-2209132 and the human pancreatic cancer fibroblast cell strain CAFPC-2303221 are all Cell STR identification and immunofluorescence detection prove that the cell strain is a fibroblast cell strain. After the tumor-associated fibroblast and pancreatic cancer cells are co-cultured, the proliferation ability of the tumor cells is obviously enhanced, and the sensitivity of the tumor cells to a chemotherapeutic drug gemcitabine is reduced. A new thought is provided for diagnosis and treatment of pancreatic cancer, and based on the pancreatic cancer in-vitro co-culture model established in vitro, the application has important significance for researching the effect and related mechanisms of fibroblasts in the pancreatic cancer tumor microenvironment.

The invention discloses an application of an AP2-F2 protein polyclonal antibody as a cryptosporidium female gamete positioning tag antibody. The AP2-F2 protein of cryptosporidium parvum is subjected to truncated prokaryotic expression, protein is purified to immunize an ICR mouse, a polyclonal antibody is prepared, ELISA and WB detection of antibody titer are carried out to prove that the polyclonal antibody is effective, then indirect immunofluorescence detection of the antibody is carried out to determine that the polyclonal antibody is located on the female gametes of cryptosporidium parvum, and the polyclonal antibody can be used as a label to locate the female gametes of cryptosporidium parvum. The method plays an important role in localization research of unknown protein of cryptosporidium.

The invention relates to the fields of epigenetic regulation and tumor treatment, and aims to evaluate that the cell distribution of the mutant is consistent with that of H3 by constructing Bas-2B (H3K9R) and Bas-2B (H3K18R) stably transfected cell strains and analyzing the cell positioning condition of the H3K9R / H3K18R mutant through an immunofluorescence technique. According to the present invention, a Western blotting technology is adopted to detect the H3K9 / H3K18 lactic acid modification level of Bas-2B (H3K9R) and Bas-2B (H3K18R) cells compared to control cells so as to verify the influence of the H3K9R / H3K18R mutant on the H3K9 / H3K18 lactic acid modification; after Bas-2B (H3K9R), Bas-2B (H3K18R) cells and control cells of the Bas-2B (H3K9R) and the Bas-2B (H3K18R) cells are subjected to nickel compound exposure treatment, the influence of the H3K9R / H3K18R mutant on the nickel compound induced lung cancer is evaluated through a soft agar cloning formation experiment. An AGS cell line stably transfecting H2BK16R is constructed, and the cell localization condition of the H2BK16R mutant is analyzed through an immunofluorescence technology. According to the present invention, a Westernbloting technology is adopted to detect the lactic acid modification level of AGS (H2BK16R) cells so as to verify the influence of the H2BK16R mutant on the H2BK16 lactic acid modification; the influence of the H2BK16R on the malignant proliferation ability of the gastric cancer is researched through a soft agar clone formation experiment.

The invention discloses an application method for revealing RIPK3 as a pathological index of osteoarthritis based on transcriptomics analysis, and belongs to the technical field of molecular biology and genetic engineering.The method comprises the following steps that S1, a Trizol reagent is used for conducting total RNA extraction on an articular cartilage specimen, and the RIN number gt is selected; 7.0, constructing a sequencing library by using the high-quality RNA sample; s2, carrying out quality inspection on the constructed library, and carrying out mRNA sequencing by using an Illumina NovaseqTM6000 sequencer after all the libraries are qualified in quality inspection; s3, carrying out bioinformatics analysis on data generated by high-throughput sequencing; s4, different parts of the cartilage tissue of the OA patient are labeled with RIPK3 through immunofluorescence, it is proved that expression of the RIPK3 in cartilage cells has strong correlation with the pathology of the OA focus, and the feasibility of taking the RIPK3 as a clinical pathology index is proved.

The invention relates to the technical field of general image data processing or generation, in particular to a multi-view indirect immunofluorescence medical image classification interpretation method and system, and the method comprises the steps: mapping an ethanol view, a formaldehyde view and an HEp-2 view to a feature space, and converting into a feature sequence; performing position coding on the feature sequence to obtain position information; based on the feature sequence with the position information, modal identification information is added, and an identification feature sequence is determined; based on the identification feature sequence, executing multi-modal information fusion, and determining a multi-modal feature sequence; based on the multi-modal feature sequence, combining an attention mechanism to determine a long-distance dependency relationship and correlation between the data; and based on the attention mechanism model, outputting the probability of each category to execute classification interpretation. According to the method, the type of the anti-neutrophil cytoplasm antibody fluorescence model can be adaptively and comprehensively judged in combination with the characteristics of fluorescence brightness, forms and the like of different views, and interference existing in a single view is avoided.

The application discloses a kind of multiple immunofluorescence detection method, equipment and medium based on space reconstruction, it is related to histopathological analysis technical field, including, preparation tissue sample and join fluorescent reference microbead to obtain continuous section;To the tissue sample cycle pretreatment, and utilize fluorescent reference microbead to carry out intensity normalization and bleaching time shift correction, obtain correction image sequence;Spectral unmixing is carried out under three-dimensional voxel coordinate system and introduces space regular constraint, obtain voxel level fluorescence intensity vector;Combining nuclear dye signal and fluorescent reference microbead, using rigid and non-rigid registration and supplemented with three-dimensional deconvolution, reconstruct high-resolution voxel stack and segment cell voxel set;The adjacent relationship and colocalization index of different phenotype cells are calculated, and detection result is generated.The application realizes high-resolution tissue and cell reconstruction under three-dimensional space, improves spatial continuity and accuracy, and improves the stability and accuracy of voxel level fluorescence signal quantification.

The invention belongs to the technical field of biomedicine, and discloses an antinuclear antibody IgG indirect immunofluorescence detection method and system, and the detection standardization degree and the result reproducibility are significantly improved through the full-automatic system design in combination with precise mechanical transmission and an automatic sample adding device. Through an optimized FITC labeling system and a refined washing procedure, non-specific binding is remarkably reduced, and meanwhile, the binding efficiency of the antinuclear antibody and the secondary antibody is improved, so that the detection sensitivity is improved. Through the design of the automatic sample adding and sheet sealing device, the sample treatment efficiency is greatly improved, and simultaneous detection of large-scale samples can be realized. Through combination of a high-resolution imaging system and an intelligent image analysis algorithm, morphological characteristics and distribution rules of fluorescence signals are automatically extracted, and the accuracy and objectivity of a detection result are greatly improved.

The invention relates to the technical field of biology, and particularly discloses a construction method and application of an endometrial epithelium organ fibrosis model. According to the method, human endometrial epithelial cells are extracted, and an endometrial epithelial organ is established by adopting a Matrigel three-dimensional culture system. Afterwards, the organoid is induced to form endometrial phenotypes in different physiological cycles through hormone stimulation, and a ferroptosis inducer FIN56 is added in the culture process to induce fibrosis. The expression of GPX4, Fibronectin and p-Smad2 / 3 is detected through Western blot and immunofluorescence, and the successful construction of the fibrosis model is verified. The invention provides an in-vitro model capable of simulating endometrial fibrosis pathological characteristics of a patient with PCOS (polycystic ovarian syndrome), the in-vitro model can be used for mechanism research and drug screening of PCOS-related endometrial lesions, and a new research tool and an intervention strategy are provided for treatment of PCOS endometrial fibrosis.

Methods and systems for analysing the cellular composition of a sample are described, comprising: providing an image of the sample in which a plurality of cellular populations are associated with respective signals and classifying a plurality of query cells in the image between a plurality of classes corresponding to respective cellular populations in the plurality of cellular populations. This is performed by providing a query single cell image to an encoder module of a machine learning model to produce a feature vector for the query image, and assigning the query cell to one of the plurality of classes based on the feature vector for the query image and feature vectors produced by the encoder module for each of a plurality of reference single cell images. The machine leaning model comprises: the encoder module, configured to take as input a single cell image and to produce as output a feature vector the single cell image, and a similarity module configured to take as input a pair of feature vectors for a pair of single cell images and to produce as output a score indicative of the similarity between the single cell images. Thus, the machine learning model can be obtained without the need for an extensively annotated dataset. The methods find use in the analysis of multiplex immunohistochemistry / immunofluorescence in a variety of clinical contexts.