White blood cell, TEM

White blood cell, TEM

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Caption: White blood cell. Coloured transmission electron micrograph (TEM) of a section through a human eosinophil. This white blood cell (leucocyte) is involved in the immune response. The cell possesses a characteristic bi-lobed nucleus (red) and many enzyme-containing granules (purple) in its cytoplasm, used to destroy invading organisms. Eosinophils are involved in the body's allergic response and also help to defend the body from invading parasites. They are capable of ingesting and destroying foreign particles by a process known as phagocytosis. Magnification unknown.

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Keywords: allergic response, allergies, anatomy, cells, coloured, electron micrograph, eosinophil, granule, granules, granulocyte, human body, immune, immune system, immunology, leucocyte, leukocyte, parasites, section, sectioned, tem, transmission, white blood cell

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