Which of the following is NOT involved in nonspecific defenses?

A. neutrophils
B. B cells
C. natural killer cells
D. mast cells
E. monocytes


Answer: B

Biology & Microbiology

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who discovered African Jaw Tumor?

What will be an ideal response?

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Which of the following is not a sub field of microbiology?

A. bacteriology B. botany C. clinical microbiology D. virology

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Which one of the following choices is of the first lines of defense against infection for humans?

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