Which is incorrect pair on basis of its role in immune system?

  • A

    Interferons- secreted by virus infected cell which protect non-infected cells from further viral infection.

  • B

    $B$ -cell - produce on army of antibodies against pathways.

  • C

    Marcophases- mucous secreting cells which destroy pathogens.

  • D

    $IgA$ - present in initial days of lactation to protect the infant.

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Lymphocytes are seen in large numbers at sites of inflammation because