STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Intestinal suture repair. Coloured scanning electron micrograph (SEM) of a suture repair made in the intestines using surgical thread. Such threads are made from microfilament nylon and can have a thickness less than that of a human hair. The suture (green) is surrounded by a large tissue clot (red), aiding in the healing process.
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