Test paper strip for detecting Porcine Parvovirus and porcine encephalitis B virus antibody
A technology for porcine Japanese encephalitis and parvovirus, which is used in measuring devices, instruments, scientific instruments, etc., can solve the problems of inconvenient operation and inconvenience for non-professional grassroots personnel, and achieves simple operation, high labeling rate, and detection specificity. strong effect
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[0026] 1. Preparation of goat or rabbit anti-SPA IgG:
[0027] Inject negative healthy sheep or rabbits 3 to 4 times subcutaneously and intramuscularly with 50μg~100μg SPA / kg body weight, collect blood venously 20 days after the last immunization, measure the serum antibody titer above 1:2000 by ELISA, collect blood from the heart or carotid artery Bloodletting and collection of hyperimmune serum. Take 1 part of serum and 2 parts of PBS solution (pH7.2) and mix well, add an equal volume of saturated ammonium sulfate solution and mix well, put it in a refrigerator at 4°C for 2 hours, centrifuge at 4°C and 10000r / min for 15min, discard the supernatant; Appropriate amount of PBS solution (pH7.2) to dissolve the precipitate, add saturated ammonium sulfate solution to the final concentration of 33%, put it in the refrigerator at 4°C for 2h, centrifuge at 4°C and 10000r / min for 15min, discard the supernatant, and use a small amount of PBS solution (pH7.2) dissolves the precipitate,...
Embodiment 1
[0041] Example 1: Test strips for one-step detection of porcine parvovirus and porcine Japanese encephalitis virus antibodies
[0042] see figure 1 with figure 2 , in the figure 1 is the support layer, which is made of hard plastic thin strips, 2 is the sample adsorption fiber layer of the test end, which is made of glass wool, 3 is the fiber layer of adsorbed gold standard substance, which is made of glass with colloidal gold labeled SPA Made of cotton, prepare its gold standard SPA glass wool according to the preparation method described in the above specific embodiment 4, 4 is a cellulose membrane layer, made of nitrocellulose membrane, and 5 is a water-absorbing material layer, made of water-absorbing filter paper ; Paste each layer of numbers 2, 3, 4, and 5 on the hard plastic sheet strip 1 from the left end test end to the right, and the fibers at the junction between each other interpenetrate each other; on the nitrocellulose membrane layer 4, 6 uses purification The...
Embodiment 2
[0044] Embodiment two: one step detects the test strip of porcine parvovirus, porcine encephalitis virus antibody, which is basically the same as embodiment one, except that:
[0045] Adsorption gold standard material fiber layer 3 is made with the glass wool of PPV and JEV two kinds of purification virus antigen liquids that are adsorbed with colloidal gold mark, prepares its gold standard purification virus antigen (Xi ) glass wool; on the nitrocellulose membrane layer 4, 7 is the control blot C printed with sheep (or rabbit) anti-PPV and JEV IgG solutions, and the two blots are arranged in parallel and combined as "||| ". Others including test sample preparation, operation method and result judgment are the same as the operation method in Embodiment 6 and will not be repeated.
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