‘First line of defence' is known as

  • A

    Antibodies

  • B

    WBC

  • C

    Skin

  • D

    Liver

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Each antibody has $...A...$ polypeptide chains, $...B...$ small chains called $....C...$ chains and $...D...$ longer chains called $.E...$ chains

The antibody, therefore, is represented as $...F...$

Here $A$ to $F$ refers to

Grafted kidney may be rejected in a patient due to

  • [NEET 2015]

‘Pathogens' are

What would happen to immune system, if thymus gland is removed from the body of a person ?

After vaccination the body builds up