Cigarette Smoking Ages Lung Cells (IMAGE)

University of Iowa

Cigarette Smoking Ages Lung Cells

Caption

Normal human lung fibroblasts (shown on left) divide and maintain structural integrity. In contrast, lung fibroblasts exposed to cigarette smoke (shown on right) stop dividing and accumulate beta galactosidase (appears in blue), an enzyme that is a marker of an aging cell.

Credit

University of Iowa/Nyunoya

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