Q.

Which of the following is a physiological barrier that provides innate immunity?

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a

Polymorpho nuclear leukocytes

b

Mucus coating of gut

c

Saliva in the mouth

d

Stratified epithelium of the skin

answer is C.

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Detailed Solution

 Saliva contains antibacterial lysozyme and acts as a physiological barrier.

Skin, mucus coating - Physical barriers

Polymorphonuclear leucocytes - Cellular barriers

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Which of the following is a physiological barrier that provides innate immunity?