25.8 MB (4.0 MB compressed)
3072 x 2934 pixels
25.9 x 24.9 cm ⏐ 10.2 x 9.8 in (300dpi)
STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Basophil white blood cell. Coloured transmission electron micrograph (TEM) of a basophil white blood cell. Basophils are the smallest and rarest of the white blood cells. They are part of the body's immune system, dealing with allergic and inflammatory reactions. They secrete the chemicals heparin, histamine and serotonin, which are stored in granules (orange) in the cell's cytoplasm. Magnification: x4500 when printed 10 centimetres wide.
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