45.8 MB (4.3 MB compressed)
4000 x 4000 pixels
33.8 x 33.8 cm ⏐ 13.3 x 13.3 in (300dpi)
EYE OF SCIENCE / SCIENCE PHOTO LIBRARY EYE OF SCIENCE / SCIENCE PHOTO LIBRARY
Macrophages attacking parasitic larva. Coloured scanning electron micrograph (SEM) of one of several white blood cells (macrophages, yellow) attacking the larva (microfilaria, white, partly seen) of the parasitic nematode worm Wuchereria bancrofti. This worm is passed from human to human via mosquito bites. It lodges in and blocks the lymph nodes that drain to the lower extremities causing elephantiasis, the massive enlargement and deformity of the legs and genitalia. Macrophages attack many types of disease-causing organisms, as well as cleaning up cellular debris. Magnification: x4900 when printed 10 centimetres wide.
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