109 results about "Immunoblottings" patented technology

The invention belongs to the technical field of antibody preparation, and particularly relates to an anti-human carbohydrate antigen CA125 monoclonal antibody and application thereof. The amino acid sequences of CDR1-3 on a light chain variable region of the monoclonal antibody are respectively shown as SEQ ID NO.3-5, and the amino acid sequences of CDR1-3 on a heavy chain variable region of the monoclonal antibody are respectively shown as SEQ ID NO.8-10. The monoclonal antibody provided by the invention can specifically recognize and bind to a natural carbohydrate antigen CA125 expressed by human cells or tissues, has good affinity and relatively high sensitivity of binding of the antibody and the antigen, has strong anti-interference ability to complex non-target protein components in the cells / tissues, is beneficial to significantly improving the accuracy and reliability of immunodetection of human CA125 protein, and has good application prospects. The method is suitable for high-specificity, high-sensitivity and high-reliability detection of the human CA125 protein, and has good applicability in a plurality of detection systems such as immunoblotting, immunoprecipitation, immunohistochemistry and the like.

The invention discloses an immunoblotting image recognition method and system based on deep learning, relates to the field of bioinformatics and computer vision, and solves the problem that it is difficult to extract various related features of protein from an image through an image recognition technology. The method solves the technical problem that a prediction value obtained by predicting a protein expression level obtained by a deep learning model through various protein feature data is difficult to correct. The method comprises the following steps: capturing a strip image on a film by using a high-resolution scanner; recognizing the preprocessed image through an image recognition technology, and extracting features related to the immunoblotting; predicting the feature data through a correspondingly trained deep learning model to obtain an area prediction value, a gray scale difference degree prediction value and a relative brightness prediction value; corresponding weights are given to the three prediction correction values for addition, and a comprehensive prediction correction value is obtained; and comparing the comprehensive expression evaluation value with a preset threshold value to judge the protein expression level.

The invention relates to the technical field of immunoblotting detection, in particular to an unattended full-automatic immunoblotting detection system and method. After the sample adding needle is cleaned, part of the cleaning liquid stays on the surface of the sample adding needle, and the sample adding needle needs to move upwards to reset after the sample adding needle is cleaned, so that the mounting pipe and the cleaning plate are in a static state in the upward moving process of the sample adding needle; the sample adding needle, the mounting pipe and the cleaning plate are in a relative motion state, so that the sample adding needle moves upwards in the through hole in the middle of the cleaning plate, and the inner wall of the through hole is in close contact with the outer side of the sample adding needle in the process, so that the cleaning plate scrapes cleaning liquid on the surface of the sample adding needle; the problem of cross infection generated when the sample adding needle samples the to-be-detected sample is avoided, so that the detection accuracy is improved.

The invention discloses an immunoblotting data classification system based on feature engineering, relates to the technical field of data processing, and solves the problem that whether a protein band exists in an original immunoblotting image is difficult to identify; secondly, feature parameters of an original immunoblotting image and immunoblotting data are difficult to extract; secondly, a feature matrix is difficult to generate according to the feature parameters, and data classification is difficult to carry out after feature subsets are screened out according to a selection algorithm; and finally, the characteristic parameters in the characteristic subsets are difficult to comprehensively analyze. The system comprises the following modules: a data acquisition module, a data processing module, a feature extraction module, a feature processing module, a data classification module and a data analysis module. Through feature engineering and a classification model, classification of immune data is realized.

The invention belongs to the technical field of antibody preparation, and particularly relates to an anti-terminal deoxynucleotidyl transferase (TdT) antibody and application thereof. The amino acid sequences of CDR1-3 on a light chain variable region of the antibody are respectively shown as SEQ ID NO.3-5, and the amino acid sequences of CDR1-3 on a heavy chain variable region of the antibody are respectively shown as SEQ ID NO.8-10. The antibody disclosed by the invention can specifically recognize TdT protein naturally expressed in cells and tissues, has the advantages of high specificity, high affinity, high sensitivity and the like when being used for immunoblotting, immunohistochemistry and other immunodetection systems, is beneficial to reducing false positive and false negative rates in pathological diagnosis, improves the accuracy of immunodiagnosis, and has a good application prospect. The method has wide application potential in the field of immunological detection of living biological samples. In addition, the antibody disclosed by the invention has cross-species reaction characteristics on homologous TdT proteins of human, mice and rats, so that the application scene of the antibody is greatly expanded.

Disclosed herein are compositions comprising protein antigens and RNA encoding the same (eg., compositions comprising protein antigens and RNA encoding antigens) that can be used to induce an immune response against SARS-CoV-2. Also disclosed herein are immunogenic compositions and medical preparations comprising the same, and methods of making and using the same. In some embodiments, the technologies provided herein can be used to address and / or overcome immune imprinting in SARS-CoV-2.

The invention relates to an anti-mouse IgG nano antibody and alkaline phosphatase fusion protein as well as a preparation method and application thereof. The anti-mouse IgG nano antibody and alkaline phosphatase fusion protein sequentially comprises an anti-mouse IgG nano antibody, a connecting peptide and shewanella alkaline phosphatase from an amino terminal to a carboxyl terminal. The fusion expression of the anti-mouse IgG nano antibody and shewanella alkaline phosphatase in escherichia coli is designed, so that various defects of a chemical labeling method can be avoided, a high-purity and high-specific activity enzyme-labeled antibody can be prepared, the preparation period of a second antibody can be shortened, the preparation process of the second antibody can be simplified, the stability of batches can be improved, and the dependence on experimental animals can be reduced. The prepared anti-mouse IgG nano antibody and alkaline phosphatase fusion protein can be applied to the field of immunodetection, such as a chemiluminescence immunoassay method, an enzyme-linked immunosorbent assay method, an enzymatic fluorescence immunoassay method, an immunoblotting method and the like.

The invention discloses a preparation method and application of carassius auratus rahn aquatic OmpA gene cloning and prokaryotic expression as well as a polyclonal antibody. The preparation method comprises the following steps: culture and DNA amplification of rahn aquatic, design of an OmpA primer, gene cloning and prokaryotic expression, back multi-point subcutaneous injection of an immune rabbit, heart blood sampling and preparation of the polyclonal antibody. The invention further provides OmpA protein prokaryotic expression and protein purification, preparation of OmpA polyclonal antiserum and application of fish bodies. According to the invention, a rahnella aquatilis OmpA gene is cloned, a specific Hind III and EcoR1 double-enzyme digestion primer sequence OmpA-1F / OmpA-1R is designed, a prokaryotic expression vector pET32a-OmpA is constructed, high-immunogenicity OmpA protein is obtained through purification, OmpA specific multi-antibody serum is prepared, and the OmpA specific multi-antibody serum can be used for preparing the multi-antibody serum. The OmpA polyclonal antibody can be used for detecting and positioning the expression application of rahnella aquatica OmpA protein in crucian carp bodies through bidirectional agar diffusion, an immunoblotting method and an immunohistochemical method, and provides a reference basis for research and development and application of rahnella aquatica subunit vaccines and a molecular diagnosis technology as well as immune prevention and control of infectious diseases of the rahnella aquatica subunit vaccines and the molecular diagnosis technology.

This invention discloses an anti-MSLN antibody and its applications. The anti-MSLN antibody comprises a heavy chain variable region and a light chain variable region. The heavy chain variable region comprises HCDR1, HCDR2, and HCDR3, and the light chain variable region comprises LCDR1, LCDR2, and LCDR3. The amino acid sequences of HCDR1, HCDR2, and HCDR3 are shown in SEQ ID NO:7, 8, and 9, respectively; and the amino acid sequences of LCDR1, LCDR2, and LCDR3 are shown in SEQ ID NO:4, 5, and 6, respectively. The antibody provided by this invention has good affinity and specificity for MSLN antigens, effectively detecting target proteins in cells overexpressing MSLN. It can also be widely used as a core ingredient in the development of high-sensitivity MSLN detection kits such as ELISA, Western blotting, and immunohistochemistry.

The utility model discloses a multichannel immunoblotting membrane washing platform which comprises a bottom plate, the top of the bottom plate is fixedly connected with first springs, the tops of the first springs are jointly and fixedly connected with a membrane washing box, the front portion of the membrane washing box is provided with a collecting assembly, the rear portion of the membrane washing box is provided with a conveying assembly, and the top of the bottom plate is provided with a shaking assembly. The shaking assembly is located on the left side of the film washing box. By designing the shaking assembly, the film washing box can swing at a stable frequency, so that the film washing effect is improved, the control handle can be lifted upwards in the equipment operation process to enable the pressing block to press the smooth surface of the rack, the rack and the gear are meshed with each other, the rack can drive the gear to rotate at a fixed frequency, and the film washing effect is improved. Therefore, the effect that the film washing box swings at a stable frequency is achieved.

The present application relates to the antibody of phorbolylated isocitrate dehydrogenase 1 and its preparation method and purpose, and specifically provides a polyclonal antibody, the polyclonal antibody is obtained by immunizing animals with the antigen epitope peptide of IDH1 phorbolylated, the specific site of the antigen epitope peptide is phorbolylated, and high-titer antibodies can be prepared, the phorbolylated modification of IDH1 in clinical specimens can be recognized with high specificity, and the polyclonal antibody can be used for the research of cell / tissue specimen immunoblotting and immunohistochemical method and the diagnosis of IDH1 related diseases.

The invention provides a fish creatine kinase sensitization and immune cross reactivity analysis method which comprises the following steps: preparing a fish muscle water-soluble protein crude extract, separating 40-45kDa protein components in the fish muscle crude extract through SDS-PAGE (sodium dodecyl sulfate polyacrylamide gel electrophoresis), and screening a target sensitization protein combined with IgE / IgG through immunoblotting; the method comprises the following steps: extracting total RNA of grass carp and synthesizing cDNA, designing a creatine kinase specific primer for amplification to obtain a creatine kinase gene sequence, and carrying out bioinformatics analysis after sequencing verification; the method comprises the following steps: cloning a creatine kinase gene to an expression vector, transforming escherichia coli BL21, performing IPTG induced expression, and performing urea gradient dialysis renaturation on an inclusion body to obtain the recombinant grass carp creatine kinase. Detecting the IgE binding activity of the recombinant grass carp creatine kinase and the serum of the allergic patient through dot hybridization; the IgG cross reactivity of the recombinant grass carp creatine kinase and the blue crab arginine kinase is verified through indirect ELISA; the IgE cross reaction degree of the recombined grass carp creatine kinase and the blue crab arginine kinase is quantified through inhibitory dot hybridization.

Provided are a Dabie bandavirus mRNA vaccine and a preparation method therefor. Specifically an optimized mRNA molecule is provided, and is cloned into a pGEM-3Zf(+)mRNA vaccine vector; the plasmid is linearized by means of enzyme digestion, and subjected to capping and poly(A) tail addition by means of an in-vitro transcriptase method to prepare an mRNA; the obtained mRNA is transfected into eukaryotic cells, and it is verified by means of an immunoblotting experiment that the mRNA can be expressed in vitro; and the mRNA is encapsulated by a lipid nanoparticle delivery system to obtain the mRNA vaccine, which, after immunizing mice, can induce the generation of a relatively high antibody level in serum. A viral neutralization test further proves that the immune serum can bind to viruses to prevent the viruses from infecting cells.

The utility model relates to the field of biochemical technology, and provides a protein immunoblotting device, including an incubation tray; a shaking mechanism, the incubation tray is installed on the top of the shaking mechanism; a processing platform, the shaking mechanism is fixed to the processing platform; a liquid adding mechanism, located at the top of the incubation tray, adding reagents and lotions to the incubation device; a liquid discharging mechanism, located at the bottom of the processing platform, connected to the incubation tray through a circulation pipeline; a control mechanism, the control mechanism is electrically connected to the shaking mechanism, the liquid adding mechanism and the liquid discharging mechanism; the shaking mechanism includes an incubation tray rack, a driving structure and a sliding structure. The utility model adds culture reagents to the incubation tray through the liquid adding mechanism arranged on the top of the incubation tray, and the driving mechanism and the sliding mechanism of the shaking mechanism drive the incubation tray rack to shake in the horizontal direction, so that the experimental membrane in the incubation tray is fully integrated with the culture reagent. At the same time, a liquid discharging mechanism is also provided, and the overall automation and intelligence are high, which reduces manual operations and improves experimental efficiency and accuracy.

This invention discloses an anti-MSLN antibody and its applications. The anti-MSLN antibody comprises a heavy chain variable region and a light chain variable region. The heavy chain variable region comprises HCDR1, HCDR2, and HCDR3, and the light chain variable region comprises LCDR1, LCDR2, and LCDR3. The amino acid sequences of HCDR1, HCDR2, and HCDR3 are shown in SEQ ID NO:7, 8, and 9, respectively; and the amino acid sequences of LCDR1, LCDR2, and LCDR3 are shown in SEQ ID NO:4, 5, and 6, respectively. The antibody provided by this invention has good affinity and specificity for MSLN antigens, effectively detecting target proteins in cells overexpressing MSLN. It can also be widely used as a core ingredient in the development of high-sensitivity MSLN detection kits such as ELISA, Western blotting, and immunohistochemistry.

This invention belongs to the field of biodetection technology, specifically relating to a material for detecting anti-Caspr1 antibodies and its preparation method. The invention constructs an expression plasmid capable of highly expressing the Caspr1 antigen, transfects it into HEK293T cells, and modifies the original antigen sequence during construction to achieve normal membrane expression. Subsequently, a modified cell culture protocol is used to obtain a material for detecting anti-Caspr1 antibodies based on cellular immunofluorescence assay. This invention, based on cellular immunofluorescence, avoids the limitations of flow cytometry, which is complex and requires expensive equipment. By modifying the protein expression mode to normal membrane expression, it avoids cell permeabilization, avoids false negatives caused by antigen conformational changes in enzyme-linked immunosorbent assay (ELISA) and Western blotting, and avoids false negatives caused by transmembrane expression due to transfection with the original Caspr1 sequence.

This invention discloses an antibody (YWHG-4) against HLA-G isoform molecules HLA-G1, HLA-G4, and HLA-G5, and its uses. The antibody (YWHG-4) is produced from a hybridoma with accession number CCTCC NO:2021204, using the antigenic peptide (RGYYNQSEASSHTLQWMIGC) of amino acid position 106-126 of the HLA-G molecule heavy chain as the immunogen. This invention provides the nucleotide encoding the YWHG-4 antibody and its encoding amino acid sequence. Furthermore, this invention provides the uses of the YWHG-4 antibody for the detection of HLA-G isoform molecules HLA-G1, HLA-G4, and HLA-G5 using Western blotting, immunohistochemistry, ELISA, and flow cytometry.

The present invention provides a waste liquid needle mounting mechanism, a waste liquid needle assembly and an immunoblotting detection device, wherein the waste liquid needle mounting assembly includes a mounting base and a positioning assembly; wherein the positioning assembly includes: a block connected to the mounting base, and provided with a plurality of first through holes extending through along a first direction, the plurality of first through holes being spaced apart along a second direction, and the second direction being perpendicular to the first direction; a plurality of mounting blocks arranged in a one-to-one correspondence with the plurality of first through holes; each mounting block is partially inserted into the corresponding first through hole and can move relative to the block along the first direction; a plurality of elastic members, each elastic member being arranged between a mounting block and the block, and the elastic member expanding and contracting with the movement of the mounting block. Each mounting block is used to connect to a waste liquid needle. When the waste liquid needle mounting mechanism is used, it can ensure that the plurality of waste liquid needles can all contact the membrane strip body of the corresponding immunoblotting detection membrane strip and have a better liquid removal effect.

Disclosed in the present invention are a monoclonal antibody (YWHG-4) against HLA-G isoforms (HLA-G1, HLA-G4, HLA-G5) and use thereof. The antibody (YWHG-4) is produced by the hybridoma deposited under CCTCC NO: 2021204, and an antigenic peptide (RGYYNQSEASSHTLQWMIGC) of amino acid sequences at positions 106-126 of a heavy chain of HLA-G molecules is used as an immunogen. Provided in the present invention are a nucleotide encoding the YWHG-4 antibody of the present invention and an encoded amino acid sequence thereof. Further provided in the present invention is use of the YWHG-4 antibody in the detection of the HLA-G isoforms (HLA-G1, HLA-G4, HLA-G5) by means of immunoblotting, immunohistochemistry, ELISA and flow cytometry.

The invention belongs to the technical field of antibody preparation, and particularly relates to an anti-MLH1 protein monoclonal antibody and application thereof in immunodetection. Amino acid sequences of CDR1-3 on a light chain variable region of the antibody are respectively shown as SEQ ID NO.3-5, and amino acid sequences of CDR1-3 on a heavy chain variable region of the antibody are respectively shown as SEQ ID NO.8-10. The antibody provided by the invention has strong specificity, high recognition sensitivity and good binding affinity for human MLH1 protein in cells and tissues, can accurately recognize and locate target protein in cells and tissues, greatly reduces the occurrence rate of false positive and false negative results, and can be applied to a plurality of immunodetection systems, such as human MLH1 protein, human MLH1 protein, human MLH1 protein, human MLH1 protein, human MLH1 protein and human MLH1 protein. Particularly, the method has good applicability in immunoblotting and immunohistochemical systems. Moreover, the antibody provided by the invention has cross reactivity to human and mouse homologous MLH1 proteins, and also has certain applicability and good application prospects in detection of mouse MLH1 proteins.

The invention provides a western blot image automatic analysis method, device, equipment and medium, and relates to the technical field of image understanding, the method comprises the following steps: obtaining a western blot image to be analyzed, converting the western blot image to be analyzed into a gray level image, and carrying out background noise reduction processing on the gray level image; generating a gray scale curve based on the gray scale values of the pixel points in the gray scale image; carrying out trough identification on the gray curve to obtain each trough point in the gray curve; and based on the position of the trough point in the gray curve, adding a segmentation line in the gray image to obtain a lane division result of the to-be-analyzed western blot image, and determining gray value data of each lane based on the lane division result. According to the method, lane automatic division and gray value extraction of the western blot image can be realized, and the analysis efficiency of the western blot image is improved.

The invention provides an anti-dsRNA antibody, and also provides a preparation method and application of the antibody. According to the invention, dsRNA antigen is adopted to immunize mice, and an anti-dsRNA monoclonal antibody is obtained through immune screening. The anti-dsRNA antibody disclosed by the invention is specifically combined with dsRNA, not only can be combined with unmodified dsRNA, but also can be combined with dsRNA modified by pUTP, N1-Me-pUTP and 5-OMe-UTP, and can be applied to detection of dsRNA by an immunoblotting method, an enzymatic immunoblotting method and an ELISA (Enzyme-Linked Immunosorbent Assay) method.

The invention belongs to the technical field of medicines, and particularly relates to an experimental method for treating liver cancer by using oleanolic acid. Comprising an in-vitro experiment method and an in-vivo experiment method. The in-vitro experiment method comprises the following steps: S1, cell culture; s2, cell proliferation and migration; s3, detecting cell apoptosis and a cell cycle; s4, performing immunoblotting; s5, carrying out real-time quantitative PCR; the in-vivo experiment method comprises the following steps: step 1, performing chick embryo chorioallantoic model experiment; and 2, carrying out tumor-bearing experiment, treatment and tissue sampling on the mouse. The application of the oleanolic acid in liver cancer treatment is systematically researched for the first time, it is found that the oleanolic acid has the remarkable effects of inhibiting proliferation, inducing apoptosis, resisting angiogenesis and the like on liver tumors through the synergistic effect of multiple mechanisms, the remarkable curative effect on cancer mice is achieved, and a new medicine choice is provided for liver cancer treatment.

The present invention provides an immunoblot membrane eluent and a method for using the same. The immunoblot membrane eluent comprises: 0.12% - 0.22% of tris(hydroxymethyl)aminomethane, 0.037% - 0.047% of EDTA, 0.005% - 0.01% of Tween 20. The above raw materials are dissolved in ddH2O, and the pH value is adjusted to 9.5 - 10.0. The present invention can not only remove the affinity-bound primary antibody and secondary antibody, but also enable the undetected target antigen to remain on the blot membrane, so as to achieve a good effect of reusing the blot membrane again. There is no need to perform multiple gel electrophoreses for detecting different targets. By this method, the NC membrane can be repeatedly eluted at least 5 times, and the detection signal of the new antigen remains unchanged, thus avoiding waste of rare or expensive samples.

This invention relates to a method for constructing a polycystic kidney disease (PCD) model and its applications. The method involves overexpressing the MYCN gene in a target animal to obtain a PCD model that leads to PCD-related phenotypes. The method includes the following steps: obtaining a first strain of mice with Rosa26 knock-in overexpressing the CAG-LSL-HA tag-MYCN-IRES-BFP-Wpre-polyA gene; obtaining a second strain of mice by inserting Cre-WPRE-polyA into the start codon of the Pax8 gene; and crossing the first and second strains of mice to obtain a MYCN-overexpressing PCD model. This invention employs various experimental methods for validation, including histopathological analysis, immunohistochemical staining, and Western blotting. The model provided by this invention overcomes the limitations of existing in vitro cell models, organoids, and existing animal models in terms of limited phenotypes. The established MYCN-overexpressing PCD animal model exhibits stable disease progression and a short disease cycle, which not only helps to elucidate the disease mechanism but also serves as an ideal platform for drug screening and efficacy evaluation.

This application discloses the use of ritonavir or its derivatives in the preparation of medicaments for treating mental disorders. This application also discloses the discovery of mice (AtLAS) with difficulty in extinction of fear memories. ‑ / ‑ Intraperitoneal injection of ritonavir significantly restored the rigidity rate in model mice. Further immunoblotting and co-precipitation confirmed that ritonavir could significantly block the binding of Syn2a and Syngr-3, and promote the formation of VAMP2, Syntaxin, and SNAP25 trimers, thereby promoting the normal release of presynaptic membrane vesicles in neurons and restoring the rigidity rate in mice with refractory rigidity, thus achieving the treatment of mental disorders such as post-traumatic stress disorder.

The application discloses an antibody (YHWG-1) against HLA-G molecules and application, the antibody (YHWG-1) is produced by hybridoma with the preservation number of CCTCC NO:202120, using all currently known 7 HLA-G isomer molecules (HLA-G1, HLA-G2, HLA-G3, HLA-G4, HLA-G5, HLA-G6 and HLA-G7) shared, the antigen peptide (QTDRMNLQTLRGYYNQSEAS) of the 72~91 amino acid sequence in the HLA-G molecule heavy chain alpha 1 domain is immunogen.The application provides nucleotide and the amino acid sequence coded by the YHWG-1 antibody of the application, and the application also provides the application of the YHWG-1 antibody for HLA-G isomer molecule immunohistochemical, immunoblotting and flow cytometry detection.

The utility model discloses an incubation device of an immunoblotting instrument. The incubation device comprises an incubation disc fixing frame, a heating plate, a rocker arm assembly, a synchronous moving assembly, a driving motor and a control circuit. The rocker arm assembly is connected with the incubation disc fixing frame through a hinge and used for driving the incubation disc fixing frame to shake, and synchronous moving assemblies are further installed on the two sides of the incubation disc frame and used for stabilizing the incubation disc fixing frame and shaking with the rocker arm assembly at the same frequency under driving of the rocker arm assembly. The device has the advantages of accurate temperature control, uniform shaking, simplicity and convenience in operation and the like, and the efficiency and the accuracy of an immunoblotting experiment are improved.

The invention provides an anti-sT2 monoclonal antibody as well as application and a product thereof, and relates to the technical field of biology. According to the invention, a Balb / C mouse and a New Zealand white rabbit are respectively immunized by using sT2 immunogen expressed and purified by a eukaryotic system, and the anti-sT2 monoclonal antibodies anti-sT2-mab1 and anti-sT2-mab2, which are high in purity, high in sensitivity, high in specificity and capable of recognizing different antigen epitopes, are obtained through multi-step screening by using a mouse hybridoma and rabbit B cell sorting method. Compared with the traditional homologous antibody pairing which is easy to cause signal weakening due to epitope steric hindrance, the anti-sT2-mab1 and anti-sT2-mab2 are combined, so that the species cross reaction can be obviously reduced. The antibody developed by the invention can be used for immunological detection of immunoblotting, immunofluorescence and the like.

The invention provides an anti-medetomidine monoclonal antibody as well as application and a product thereof, and relates to the technical field of biology. Medetomidine is used for immunizing a Balb / c mouse, splenocytes of the mouse are fused with myeloma cells, hybridoma cells with high specificity are obtained through specific high-throughput screening, a large amount of mouse ascites is obtained through culture and re-immunization, and the mouse ascites with high specificity is obtained. And the medetomidine monoclonal antibody with high purity, high sensitivity and high specificity is obtained through multi-step separation and purification, so that a required raw material is provided for developing an immune test strip for detecting medetomidine. The anti-medetomidine monoclonal antibody disclosed by the invention can be used for immunological detection such as immunoblotting and immunofluorescence, and the obtained antibody is proved to have good specific binding capacity.