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Active and passive immunity

Active and passive immunity
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Description: Active immunity is conferred by a host response to a microbe or microbial antigen, whereas passive immunity is conferred by adoptive transfer of antibodies or T lymphocytes specific for the microbe.  Both forms of immunity provide resistance to infection and are specific for microbial antigens, but only active immune responses generate immunologic memory.  
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Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=1490
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