STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Needle and hair. Coloured scanning electron micrograph (SEM) of a strand of hair (brown) and a 10/0 gauge suture thread (blue), made from microfilament nylon. The suture thread is only 50 microns in diameter, less than the strand of hair. Magnification: x 100.
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