Extra Credit: Fill in the blank: A smoker decides to quit…
Extra Credit: Fill in the blank: A smoker decides to quit after 20 years and over the course of the next several years, they start realizing that they can breath easier, cough less and when they do cough, the mucus is no longer dark brown, but clear. As it relates to the major functional tissue of the lungs, why is this progression happening in this former smoker?
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