Antigen-antibody reaction

Assertion (A): person with blood group AB can take blood from any other person . Reason(R ):Blood group incompatibility is due to antigen-antibody reaction .Blood group AB has no antibody and thus the antigen of other group is not affected.

Give an account of antigen-antibody interaction.

Fill up the blanks with correct answer(s) : Study of antigen and antibody reaction is Known as _______.

Antivenom against snake poison contains 1. Antigens 2. Antigen-antibody complexes 3. Antibodies 4. Enzymes