Human blood is grouped into ______ main types.
- Asix
- Bfour
- Cthree
- Dtwo
Solution & Step-by-step Explanation
Human blood is classified into four main types under the ABO blood group system discovered by Karl Landsteiner. These four primary groups are:
Group A
Group B
Group AB
Group O
These classifications are based on the presence or absence of specific inherited antigenic substances on the surface of red blood cells.
Group A
Group B
Group AB
Group O
These classifications are based on the presence or absence of specific inherited antigenic substances on the surface of red blood cells.