Some examples of substrates used (also known as chromogens) are AEC (3-Amino-9-EthylCarbazole), or DAB (3,3'-Diaminobenzidine). Use of one of these reagents after exposure to the necessary enzyme (e.g., horseradish peroxidase conjugated to an antibody reagent) produces a positive immunoreaction product.
1. Know When You Ovulate after Childbirth. Most women experience an extended period of bleeding immediately after giving birth. The bleeding will get lighter and lighter, lasting about six weeks. It is extremely unlikely that a woman will become pregnant during this time, although it is not impossible.
How quickly after unprotected sex can you get pregnant? Generally, it takes 3 days for sperm to get to the egg, fertilize it. A further few more days for the egg to embed it self into the lining of the womb. Even if you had sex 5 or 10 times in the same day, the male body can create enough sperm to get you pregnant.