Serum blood group determination

A is o type, b type, C A type and D AB type.

Type A, B, AB and O blood donors

blood donor

Type a non-agglutination agglutination

Type b agglutination does not agglutination does not agglutination.

Type AB does not agglutinate, does not agglutinate, does not agglutinate.

O-type agglutination agglutination agglutination agglutination not agglutination

First of all, we should know the antibody corresponding to AB serum.

The antibody in type A serum is anti-B.

The antibody in type B serum is anti-A..

There are both anti-B and anti-A in O-type serum, but there is no antigen on red blood cells.

Agglutinated in type A serum are red blood cells with B antigen, that is, people with type B blood.

Similarly, the red blood cells with B antigen are agglutinated in type B serum, that is, people with type A blood.