Which of the following will be included under | vedclass

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(D) Innate immunity is non-specific type of defense that is present at the time of birth.It consists of four types of barriers:$1$. Physical barriers:

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All of these

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(D) Innate immunity is non-specific type of defense that is present at the time of birth.It consists of four types of barriers:$1$. Physical barriers: Mucus membranes and skin prevent the entry of microorganisms.$2$. Physiological barriers: Acid in the stomach,saliva in the mouth,and tears from eyes.$3$. Cellular barriers: Polymorphonuclear leukocytes ($PMNL$-neutrophils),monocytes,and natural killer cells.$4$. Cytokine barriers: Virus-infected cells secrete proteins called interferons which protect non-infected cells from further viral infection.Since all the given options represent these barriers,the correct answer is $D$.

Which of the following will be included under innate immunity?

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