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1. Put 100 ㎕ of antigen diluted with coating solution1 into each well in the plate.
2. Following incubation for 2 hours at 37℃ or overnight at 4℃, pour out the coating solution.
3. Put 300 ㎕ blocking solution2 into each well.
4. Following incubation for 0.5 ~ 1 hour at 37℃ (or overnight at 4 ℃ ) , , pour out the blocking solution.
5. After washing out with 300 ㎕ of TBS-T buffer3, completely dry out the remaining solution by patting softly on paper towel.
6. Put 100 ㎕ diluted primary antibody into each well and incubate for 1 hour at 37℃.
7. After pouring out the plate, completely dry out the remaining solution by patting softly on paper towel.
8. After washing out each well with 300 ㎕ of TBS-T buffer, completely dry out the remaining solution. Repeat these procedures three times.
9. Put 100 ㎕ of HRP-labeled secondary antibody combining primary antibody and incubate for 1 hour at 37℃.
10. After pouring out the plate, completely dry out the remaining solution by patting softly on paper towel.
11. 1 After washing out each well with 300 ㎕ of TBS-T buffer, completely dry out the remaining solution. Repeat these procedures five times.
12. Put 100 ㎕ of substrate into each well.
13. After 10 minutes (adjust according to color development) put 100 ㎕ of stop solution.
14. Read absorbance at 492nm with ELISA reader.
1 Coating solution: 32mM Na2CO3, 68mM NaHCO3
2 Blocking solution: 1% non fat dry skim milk or 1% Bovine serum albumin in PBS
3 TBS-T buffer: 0.1M Tris-buffered saline (pH7.4) with 0.1% Tween 20
1. Put 100 ㎕ of capture antibody diluted with coating solution4 into each well (250ng/well).
2. Following incubation for 2 hours at 37℃ (or overnight at 4 ℃ ) , pour out the coating solution.
3. Put 300 ㎕ blocking solution5 into each well.
4. Following incubation for 0.5 ~ 1 hour at 37℃ (or overnight at 4 ℃ ) , pour out the blocking solution.
5. After washing out with 300 ㎕ of TBS-T buffer6, completely dry out the remaining solution by patting softly on paper towel.
6. Put 100 ㎕ of titrated antigen solution (diluted with blocking buffer of 3% BSA/PBS) into each well and incubate in high humidity for 2 hours at room temperature.
7. Pour out the antigen solution and wash out with 300 ㎕ of PBS (repeat 4 times).
8. Put 100 ㎕ diluted primary antibody into each well and incubate for 1 hour at 37℃.
9. After pouring out the plate, completely dry out the remaining solution by patting softly on paper towel.
10. After washing out each well with 300 ㎕ of TBS-T buffer, completely dry out the remaining solution. Repeat these procedures three times.
11. Put 100 ㎕ of enzyme-labeled secondary antibody and incubate for 1 hour at 37℃.
12. After pouring out the plate, completely dry out the remaining solution by patting softly on paper towel.
13. After washing out each well with 300 ㎕ of TBS-T buffer, completely dry out the remaining solution. Repeat these procedures five times.
14. Put 100 ㎕ of substrate into each well.
15. After 10 minutes (adjust according to color development) put 100 ㎕ of stop solution.
16 Read absorbance at 492nm with ELISA reader.
4 Coating solution: 32mM Na2CO3, 68mM NaHCO
5 Blocking solution: 1% non fat dry skim milk or 1% Bovine serum albumin in PBS
6 TBS-T buffer: 0.1M Tris-buffered saline (pH7.4) with 0.1% Tween 20