Match the Column-I with Column-II and select | vedclass

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(B) The correct matching is as follows:$1$. Cellular barrier: These include cells like polymorphonuclear leukocytes ($PMNL$-neutrophils),monocytes,and

Vedclass · Accepted Answer

$(1-C), (2-A), (3-B), (4-D)$

Vedclass · Answer

(B) The correct matching is as follows:$1$. Cellular barrier: These include cells like polymorphonuclear leukocytes ($PMNL$-neutrophils),monocytes,and natural killer (type of lymphocytes) in the blood. Thus,$1-C$.$2$. Physiological barrier: These include acid in the stomach,saliva in the mouth,and tears from eyes,which prevent microbial growth. Thus,$2-A$.$3$. Cytokine barrier: Virus-infected cells secrete proteins called interferons which protect non-infected cells from further viral infection. Thus,$3-B$.$4$. Physical barrier: These include the skin and the mucus coating of the epithelium lining the respiratory,gastrointestinal,and urogenital tracts. Thus,$4-D$.Therefore,the correct sequence is $(1-C), (2-A), (3-B), (4-D)$,which corresponds to option $B$.

Column-$I$	Column-$II$
$1$. Cellular barrier	$A$. Saliva in the mouth
$2$. Physiological barrier	$B$. Interferons
$3$. Cytokine barrier	$C$. Natural killer (type of lymphocyte)
$4$. Physical barrier	$D$. Mucus coating of the respiratory tract

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