2. Introduction
• Study of immunity is called immunology.
• Immunity is defined as resistance to microorganism or any other
infection.
• immunity is very important in case of pandemic like covid
• Humidity may be natural immunity may be artificial.
• Currently lots of researches are going on immunity modifier.
7. Active
• 1)Natural
• Contact with disease or microorganism or infection
• It produces naturally immunity by generating Antibody
• 2) artificial
When we inject antigen in order to produce antibody.
Vaccine
Toxoids
R DNA
8. Passive
• 1) Natural
Transfer of antibody from mother to child.(Placenta and milk)
• 2)artificial
• We directly give antibodies
Monoclonal antibodies