What is passive immunity?

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(D) Passive immunity is a type of immunity where pre-formed antibodies are directly introduced into the body to provide immediate protection against s

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It is the immunity obtained by introducing ready-made antibodies into the body against foreign substances.

Vedclass · Answer

(D) Passive immunity is a type of immunity where pre-formed antibodies are directly introduced into the body to provide immediate protection against specific pathogens or toxins.Unlike active immunity,where the body's immune system produces its own antibodies after exposure to an antigen,passive immunity does not involve the activation of the host's immune system.Examples include the transfer of $IgG$ antibodies from mother to fetus through the placenta and the administration of anti-tetanus serum or anti-venom injections.

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Which of the following provides passive immunity?
$i$. Colostrum
$ii$. Antibodies against rabies pathogens
$iii$. After recovery from measles
$iv$. Polio vaccine

Assertion: The antibodies separated from serum are homogenous.
Reason: Monoclonal antibodies are homogenous immunological reagents.

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