Human blood cells

Human blood cells

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Credit: K.R. PORTER/SCIENCE PHOTO LIBRARY

Caption: colourized scanning electron micrograph (SEM) of human red blood cells (erythrocytes, red) and a single white blood cell (lymphocyte, blue). These are the two main cell components of blood. Erythrocytes are carriers of oxygen and carbon dioxide. Their biconcave surface provides maximum surface area for the exchange of gases. A lymphocyte (at bottom right) is involved in immunological defence mechanisms protecting the body against the invasion of foreign pathogens in the blood and lymph system, and involved in antibody production. Leucocytes include the class of lymphocyte cells (T-cells & B-cells). Magnification: unknown. Enhancement of 6G6179.

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Keywords: anatomy, blood, blood cell, blood cells, body, cell, cells, circulatory system, erythrocyte, erythrocytes, human, lymphocyte, lymphocytes, micrograph, micrographs, micrography, red, red and white blood cells, red blood cell, scanning electron micrograph, scanning electron micrographs, sem, white blood cell, white blood cells

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