Definitions / Explanation : Active immunity & Passive immunity
 

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When antigen is introduced to host body, the antibodies are formed. This type of immunity is known as active immunity.

Prepared antibodies which are used to save lives of people are introduced in body. This types of immunity is known as Passive immunity

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  • [NEET 2015]

Given below the diagrammatic representation of lymph nodes

Label $A, B$ and $C$

Types of immunity

$A$ : Colostrum is a very efficient means of transferring immunity to a newborn.
$R$ : IgM from mother’s milk protects the baby from the respiratory infection usually affecting in young age.