ANATOMY

Detailed explanation-1: -Antigens prepared in such a way that injected or taken orally they induce active immunity without causing disease. A noncellular infectious agent that can replicate only within a host cell. viruses consist only of one or more pieces of genetic material (DNA or RNA) surrounded by a protein coat.

Detailed explanation-2: -The plasma cells produce antibodies (Y-or T-shaped molecules), which are trained specifically to attach to and inactivate the organism you are being vaccinated against. This response from your immune system, generated by the B lymphocytes, is known as the primary response.

Detailed explanation-3: -Vaccines provide active immunity to disease.

Detailed explanation-4: -Vaccination (immunization) is a way to trigger the immune response. Small doses of an antigen, such as dead or weakened live viruses, are given to activate immune system “memory” (activated B cells and sensitized T cells).