Which of the following is not a physiological | vedclass

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(D) Physiological barriers are part of the innate immunity system that prevent microbial growth through chemical or physical conditions.$1$. Acid in t

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Mucus coating

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(D) Physiological barriers are part of the innate immunity system that prevent microbial growth through chemical or physical conditions.$1$. Acid in the stomach $(HCl)$ kills pathogens.$2$. Saliva in the mouth prevents bacterial growth.$3$. Tears from the eyes wash away pathogens and contain enzymes.$4$. Mucus coating is a physical barrier,not a physiological one,as it traps microorganisms in the respiratory,gastrointestinal,and urogenital tracts.

Which of the following is not a physiological barrier?

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