"Graveyard of $RBCs$'' 

  • A

    Liver

  • B

    Spleen

  • C

    Kidney

  • D

    All the above

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Where are $B\,-$ cells and $T\,-$ cells formed ? How do they differ from each other ?

Immune activities defence mechanism for different diseases is known as

Colostrum, the yellowish fluid, secreted by mother during the Inittlal days of lactation is very essentlal to impart immunity to the newbom infants because it contains

  • [NEET 2019]

$A$ - The vaccines generate memory - $B$ and $T$ - cells. $R$ - In vaccination activated pathogens are introduced into the body.

Assertion: Artificially acquired passive immunity results when antibodies or lymphocytes produced outside the host are introduced into a host.

Reason: A bone marrow transplant given to a patient with genetic immunodeficiency is an example of artificially acquired passive immunity.

  • [AIIMS 2017]