Overview
Related questions
Overview
Related questions
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Metaplasia
"metaplasia" refers to one tissue type undergoing a change to another, such as bronchial lining (which is usually a single layer of cells, "respiratory epithelium" becoming multi-layered and heavily keratinized, so-called squamous metaplasia. This is common in smokers. Other such changes can produce tissue such as bone in abnormal sites.
How long it usually lasts:
Chronic (lasts years to lifelong)
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