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Cellular and Molecular Biology

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Innate Immunity: Ciliary Escalator

CELLS-@7AUCI

The mucociliary escalator is a component of the innate immune system that traps particles and microbes and sweeps them from the lungs.

It functions by moving microbes and particles

A

into the esophagus.

B

out of the nose.

C

toward the throat.

D

toward the lower respiratory tract.