The first hepatitis B vaccine was approved in the United States in 1981. A recombinant version came to market in 1986. Both versions were developed by Maurice Hilleman and his team. (a history of hepatitis B vaccine)
Preliminary work In 1963, the American physician/geneticist Baruch Blumberg, working at the Fox Chase Cancer Center, discovered what he called the “Australia Antigen”
Physiology of the gastrointestinal system
of the intestinal UPPER GI TRACT
Pepsinogens are mainly grouped in 5 different groups based on their primary structure
1. Pepsinogen A (also called pepsinogen I) 2. Pepsinogen B 3. Progastricsin (also called pepsinogen II and pepsinogen C) 4. Prochymosin (also called prorennin) 5. Pepsinogen F (als
Nepenthesin (and the carnivorous plants it comes from)
Nepenthesin (also spelled nepenthacin or nepenthasin) is an aspartic protease of plant origin that has so far been identified in the pitcher secretions of Nepenthes and i
Rennet
For the apple varieties, see Reinette Rennet is a complex set of enzymes produced in the stomachs of ruminant mammals. Chymosin, its ke
Chymase and Chymosin – Rumored To Be Synonyms (and a little renin and rennin)
Chymase Alternative name for chymosin [“chymase .” A Dictionary of Food and Nutrition. . Encyclopedia.com. 25 Aug. 2022 https://www.encycl
What Is Metalloproteinase?
A metalloproteinase, or metalloprotease, is any protease enzyme whose catalytic mechanism involves a metal. An example is ADAM12 w