Which is an incorrect pair based on its role | vedclass

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(C) The incorrect pair is $C$. Macrophages are large phagocytic cells that engulf and destroy pathogens,cellular debris,and foreign substances. They a

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Macrophages - Mucous secreting cells which destroy pathogens.

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(C) The incorrect pair is $C$. Macrophages are large phagocytic cells that engulf and destroy pathogens,cellular debris,and foreign substances. They are not mucous-secreting cells. Mucous is typically secreted by goblet cells in the respiratory and digestive tracts. $A$: Interferons are proteins produced by virus-infected cells that protect neighboring non-infected cells from viral infection. This is correct.$B$: $B$-cells are a type of lymphocyte that differentiates into plasma cells to produce antibodies against pathogens. This is correct.$D$: $IgA$ is the primary antibody found in colostrum (the initial milk produced during the first few days of lactation),which provides passive immunity to the infant. This is correct.

Column-$I$ (Types of immunity)	Column-$II$ (Example)
$A$. Natural active	$p$. Immunity developed by heredity
$B$. Artificial passive	$q$. From mother to foetus through placenta
$C$. Artificial active	$r$. Injection of antiserum to travellers
$D$. Natural passive	$s$. Fighting infections naturally
	$t$. Induced by vaccination

Which is an incorrect pair based on its role in the immune system?

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