DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Infected sebaceous cyst. Close-up of an infected sebaceous cyst on a 59-year-old man, with a wick inserted (tube, centre). A sebaceous cyst is a benign fluid filled swelling that occurs at the site of a sebaceous gland in the skin. Here, the wick is used to allow fluid to drain from the cyst.
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