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Disgustingssss in lung.


Primarygun

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If he means bacteria, then they do, all the time, as do fungal spores, and other particulates. ed84c is right, your immune system gets rid of them (secretory IgA, mainly). The mucus secreted by mucosal cells traps them, SIgA kills them, and the cillia lining your lungs move them up and back out of your lungs so you can expel them.

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