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.
Healthy sperm can reach the egg in as little as thirty minutes. Once inside the femaleâs body, sperm can live for several days. Females donât get pregnant immediately after having intercourse. It will take up to 6 days for the sperm and egg to join together and make a fertilized egg. Then it still takes 6-10 days for the fertilized egg to implant itself in the lining of the uterus completely.