|Class 12 Biology Human Health Disease||Types of immunity|
Based on the type of immune cell acting against the antigens, immunity can be classified into two types-
During organ transplantation, tissue matching and blood group matching are essential before undertaking any graft/transplant and even after this the patient has to take immuno–suppresants all his/her life because the body is able to differentiate ‘self ’ and ‘nonself’ and the cell-mediated immune response is responsible for the graft rejection.
Based on the nature of antibodies, immunity is divided into two types-
Example- The yellowish fluid colostrum secreted by mother during the initial days of lactation has abundant antibodies (IgA) to protect the infant.