A 55-yA A 55-year-old male with a 30-year history of smo…
A 55-yA A 55-year-old male with a 30-year history of smoking is examined for respiratory disturbance. Examination of his airway (bronchial) reveals that stratified squamous epithelial cells have replaced the normal columnar ciliated cells. What is this type of cellular adaptation called?
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