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Physiological barriers that prevent mic...

Physiological barriers that prevent microbial growth include all, except
(a) Acid in stomach
(b) Saliva in mouth
(c) Mucus coating of the epithelium lining gut
(d) Tears from eyes

A

Acid in stomach

B

Saliva in mouth

C

Mucus coating of the epithelium lining gut

D

Tears from eyes

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