Define immunity.
Topic: Human health and diseases
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is the resistance power of your immune system
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Immunity is the resistance or protection given against any foreign pathogen that are treated as antigens.
Any foreign substance that are not recognised by the cells in a body are treated as antigens and hence specific antibodies are produced to destroy that antigen.
Immunity are of two types- Innate and Adaptive.
Innate immune system forms the first line of defence mechanism, that a body renders when encountered with a specific antigen.
Adaptive immunity is the second line of defence mechanism that is formed after a person has already encountered antigens and specific memory B cells have been formed against it.
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