False-colour TEM of a human mast cell

False-colour TEM of a human mast cell

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This image is part of the feature Understanding Asthma
This image is part of the feature Secret Life Of The Cell

Credit: SCIENCE PHOTO LIBRARY

Caption: False-colour transmission electron micrograph of a human mast cell in tissue. Mast cells are found in connective tissue and form part of the body's immune system. Within the cell is a large circular nucleus coloured red, containing strands of chromatin coloured blue. In the surrounding cytoplasm coloured yellow are numerous small red granules. The granules contain the chemicals heparin, histamine and serotonin. These are released in response to foreign proteins on the surfaces of invading bacteria or viruses and are responsible for setting off inflammation and allergic reactions. Magnification: x1740 at 6x4.5cm size.

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Keywords: allergy, anatomy, cell containing, false-coloured, heparin, histamine, human body, images, immune system, immunology, inflammation response, magnified image, mast cell, mastocyte, microscopic photos, serotonin, subjects

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