Define immunity and state its types.
(N/A) Our body is protected against most of these foreign agents (pathogens or antigens). The ability of the host to fight against these disease-causing organisms,conferred by the immune system,is called $immunity$.
Immunity is of two types:
$(i)$ $Innate$ $immunity$
$(ii)$ $Acquired$ $immunity$
Immunity is of two types:
$(i)$ $Innate$ $immunity$
$(ii)$ $Acquired$ $immunity$
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