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35.4 MB (3.0 MB compressed)
3517 x 3520 pixels
29.7 x 29.7 cm ⏐ 11.7 x 11.7 in (300dpi)
PROFESSORS P.M. MOTTA & T. FUJITA / SCIENCE PHOTO LIBRARY PROFESSORS P.M. MOTTA & T. FUJITA / SCIENCE PHOTO LIBRARY
Liver tissue. False-colour scanning electron micrograph (SEM) of two leucocytes (white blood cells at centre) within a capillary of the liver. The capillary has a fenestrated endothelium characterised by a number of small holes through which nutrient substances may reach all liver cells. Capillaries form a complicated network inside the liver in which blood is cleaned of microorganisms, toxins, aged cells and debris. Most of this work is done by the leucocytes and also by the macrophages, the phagocytic cells which form the reticulo-endothelial system. Magnification: x1700 at 6x6cm size.
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