There are eight common blood types: A positive, A negative ... your blood type is "extremely rare." The blood type of B negative is also uncommon, occurring in "2% of Caucasian, 1% of African ...

Blood bags, sorted by type, line a tray at a hospital. Some blood types are more common than others. ER Productions Limited/Getty Images ...

If you've ever searched the internet for the rarest blood type ... dioxide On the surface of the red blood cells are proteins and sugars called antigens. They serve as markers to characterize each ...

Human populations that left Africa evolved quickly whereas Neanderthals stayed the same, according to an analysis of blood ...

After 50 years, scientists discover the MAL blood grouping system, solving a genetic mystery and improving transfusion safety worldwide.