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Difference between active and passive immunity?

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Difference between active and passive immunity?

Posted by Roma Singh 6 years, 3 months ago

CBSE > Class 12 > Biology

1 answers

Yogita Ingle 6 years, 3 months ago

Active Immunity	Passive Immunity
Active immunity is a permanent immunity produced by the antibodies of the host in response to a direct contact of an antigen	Passive immunity is a short-term immunity produced by the introduction of antibodies from outside to the host
Immunity doesn’t occur immediately. A time lag occurs for its development	Immunity develops immediately. There is no time lag
It generates an immunological memory	Doesn’t generate immunological memory
When the antigens enter the body naturally, antibodies and specialised lymphocytes are induced by the body	Antibodies are passed from a mother to a fetus through the placenta and to an infant via mother’s milk.
No side-effects	It may cause reactions

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