(C) An antigen is a foreign substance,such as a toxin,bacterium,or virus,that enters the body and triggers an immune response.Specifically,it acts as

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Stimulus for antibody formation

(C) An antigen is a foreign substance,such as a toxin,bacterium,or virus,that enters the body and triggers an immune response.Specifically,it acts as a stimulus for the immune system to produce specific proteins called antibodies to neutralize or destroy the foreign invader.Therefore,an antigen is the stimulus for antibody formation.

Class 12 Biology Human Health and Disease Immunity

Medium

An antigen is

A
Opposite to an antibody
B
Residue of an antibody
C
Stimulus for antibody formation
D
Result of antibody

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Human Health and Disease

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Immunity

Antibodies . . . . . . are abundant in colostrum.

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Which of the following immune responses is responsible for the rejection of a kidney graft?

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What is produced in the host body when the host is exposed to antigens?

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$T$-cells mature in the . . . . . . .

Medium

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Match the following columns:
Column-$I$ Column-$II$
$1.$ Saliva and tears $a.$ Cytokine barrier
$2.$ Mucus coating $b.$ Cellular barrier
$3.$ $PMNL$ $c.$ Physiological barrier
$4.$ Interferons $d.$ Physical barrier

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Column-$I$	Column-$II$
$1.$ Saliva and tears	$a.$ Cytokine barrier
$2.$ Mucus coating	$b.$ Cellular barrier
$3.$ $PMNL$	$c.$ Physiological barrier
$4.$ Interferons	$d.$ Physical barrier

An antigen is

Similar Questions

Antibodies . . . . . . are abundant in colostrum.

Which of the following immune responses is responsible for the rejection of a kidney graft?

What is produced in the host body when the host is exposed to antigens?

$T$-cells mature in the . . . . . . .

Match the following columns:Column-$I$Column-$II$$1.$ Saliva and tears$a.$ Cytokine barrier$2.$ Mucus coating$b.$ Cellular barrier$3.$ $PMNL$$c.$ Physiological barrier$4.$ Interferons$d.$ Physical barrier

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Match the following columns:
Column-$I$ Column-$II$
$1.$ Saliva and tears $a.$ Cytokine barrier
$2.$ Mucus coating $b.$ Cellular barrier
$3.$ $PMNL$ $c.$ Physiological barrier
$4.$ Interferons $d.$ Physical barrier