Saturday 20 August 2011

S2 Natural and artificial active immunity

Active Immunity

Nature active immunity:
Nature active immunity against a disease is acquired when a person recovers from the illness.

Artificial active immunity:
Artificial active immunity against a disease is acquired by vaccination, the injection of vaccine into body.
Vaccine contains weakened or dead pathogens, injected into the body to stimulate the immune system of a person to produce antibodies.

No comments:

Post a Comment