Question

What is immunity? explain natural and acquired immunity

Answer 1

immunity is our power to fight against diseases . take an example - someone is suffering from AIDS -acquired immuno deficiency syndrome.-he will have a very weak immune system- he can be easily attacked by viruses etc

Answer 2

Immunity is the balanced state of multicellular organisms having adequate biological defenses to fight infection, disease, or other unwanted biological invasion, while having adequate tolerance to avoid allergy, and autoimmune diseases.

Natural :
Immunity that is naturally existing, Natural immunity does not require prior sensitization to an antigen.

Acquired:
Immunity acquired by infection or vaccination (active immunity) or by the transfer of antibody or lymphocytes from an immune donor (passive immunity)


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