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”
Human chorionic gonadotropin (hCG)
Human chorionic gonadotropin (hCG) is a hormone for the maternal recognition of pregnancy produced by trophoblast cells that are surrounding a gr