9.2 MB (1.3 MB compressed)
2000 x 1600 pixels
17.0 x 13.5 cm ⏐ 6.7 x 5.3 in (300dpi)
EYE OF SCIENCE / SCIENCE PHOTO LIBRARY EYE OF SCIENCE / SCIENCE PHOTO LIBRARY
White blood cell attack. Coloured scanning electron micrograph (SEM) of white blood cells (brown) attacking surgical thread (green). The cells form part of the body's immune defence, recognising and attacking foreign bodies. The thread was removed from a patient two weeks after it was used to stitch together a wound, and the image was taken immediately afterwards. Those parts which were inside the body (as seen here) were densely covered with white blood cells, which had recognised the thread as foreign and attacked it. Magnification: x320 at 6x7cm size.
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