What are blood group antibodies?
Here we must consider blood plasma.In the blood plasma, blood group antibodies will be present which are named as antibody a and antibody b.Small letters are used to designate antibodies.The role of antibody in this case is similar to the antibody of our immune system.It means that antibody a will act against antigen A and antibody b will act against antigen B.Thus based on this fact there is a rule.A person with antigen A will not have antibody a, but will have antibody b and a person with antigen B will not have antibody b but will have antibody a.In case of AB group, since both antigens are present, no antibody will be present in the plasma and in case of O group, since both antigens are absent, both antibodies will be present.Now what is reason for this rule?.This condition ensures that our own antigen in RBC is not attacked by our own antibody in plasma.Now lets summarise: 1.Blood group A has antigen A and antibody b 2.Blood group B has antigen B and antibody a 3.Blood group AB ha
