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 long it takes to conceive. The majority of couples get pregnant within three months. Your own timeline could be longer if you're older, have certain fertility-unfriendly habits (like smoking), or have a condition that impairs fertility. Of all couples trying to conceive: 1  30 percent get pregnant within the first cycle (about one month). 2  59 percent get pregnant within three cycles (about three months). 3  80 percent get pregnant within six cycles (about six months).