In the blood transfusion if the blood groups are mismatched

Solution

Answer:

The cross reactivity reactions such as \"antigen-antibody complexation\" are going to occur at the cellular level because of incompatible blood transfusion (ABO blood). The incompatible blood is going to become antigen to the host cells result in higher activation of recipient host immune system for antigen processing via antibody production finally cause immediate allergic reaction. The MHC (major histocompatability) is activated followed by cell- mediated immunity produced via the activated immune system that further will attack by cross immunization followed by cell death & agglutination