29.4 MB (10.9 MB compressed)
3560 x 2891 pixels
30.2 x 24.4 cm ⏐ 11.9 x 9.6 in (300dpi)
CNRI / SCIENCE PHOTO LIBRARY PHOTO LIBRARY CNRI / SCIENCE PHOTO LIBRARY PHOTO LIBRARY
False-colour transmission electron micrograph (TEM) of an eosinophil, a type of white blood cell. Eosinophils possess a large bilobed nucleus (bottom) and a cytoplasm packed with specific granules (in red), each containing a dense crystalloid. The granules contain enzymes, including histaminase. The number of circulating eosinophils increases in parasitic infections such as hookworm, but their role in such processes is unclear. Eosinophils are involved in inflammatory & immune responses, often in conjunction with other white cells. Magnification: x7,600 at 6x7cm size, x3,400 at 35mm size.
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