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.
I'm not sure how to address the deal with rabbits but a few factors go into how they multiply: 1  A rabbit's gestation period is about 30 days. 2  Female rabbits can begin breeding at 6 months of age. 3  A rabbit can get pregnant again almost immediately after giving birth: something on the order of 12 hours afterwards, I believe.