Macrophage engulfing Leishmania, SEM

Macrophage engulfing Leishmania, SEM

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This image is part of the feature 25 Medical Milestones

Credit: JUERGEN BERGER/SCIENCE PHOTO LIBRARY

Caption: Macrophage eating Leishmania. Coloured scanning electron micrograph (SEM) of a macrophage engulfing a Leishmania sp. parasite (mauve). Leishmania is a parasitic protozoan that causes the tropical disease leishmaniasis. Here, the macrophage, a type of white blood cell, has extended part of its body (brown/white) to capture the Leishmania. This process is called phagocytosis. Leishmaniasis is transmitted to humans by bites of infected sandflies, causing a skin ulcer at the site of the bite. Macrophages are part of the immune system and keep the body free of invading organisms. Magnification: x1,950 at 6x7cm size.

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Keywords: animal, biological, biology, cells, coloured, defence, destroying, digesting, engulfing, false-coloured, immune, immune response, immunology, leishmania sp., leishmaniasis, macrophage, medical, medicine, parasite, pathogen, phagocytosing, phagocytosis, protozoan, scanning electron micrograph, scanning electron microscope, sem, system, white blood cell

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