Contact: Elizabeth Streich
Columbia University Medical Center
Caption: Left panel: Although 207-nm UV light can penetrate and kill bacteria such as MRSA, it is unable to penetrate to the nucleus of human cells. UV from conventional lamps can penetrate and damage human cells. Right panel: Unlike UV from conventional lamps, 207-nm UV light is unable to penetrate the surface layer of dead skin to reach sensitive cells in the epidermis.
Credit: Dr. David Brenner, Columbia University Medical Center
Usage Restrictions: None
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