Which of the following acts as a physical bar | vedclass

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(A) The human body has several barriers to prevent the entry of pathogens. Physical barriers are the first line of defense. The skin and the mucous co

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Epithelial tissue

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(A) The human body has several barriers to prevent the entry of pathogens. Physical barriers are the first line of defense. The skin and the mucous coating of the epithelium lining the respiratory,gastrointestinal,and urogenital tracts are the primary physical barriers. Therefore,epithelial tissue acts as a physical barrier for immunity.

Which of the following acts as a physical barrier for immunity?

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