Red and white blood cells

Red and white blood cells

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Credit: DR YORGOS NIKAS/SCIENCE PHOTO LIBRARY

Caption: Red and white blood cells, coloured scanning electron micrograph (SEM). Polymorphonuclear white blood cell (leucocyte) surrounded by red blood cells (erythrocytes). Red blood cells are biconcave, disc-shaped cells that transport oxygen throughout the body. Polymorphonuclear leucocytes are any of several types of white blood cells produced in the bone marrow, which form 70% of human white blood cells. They play an important role in the immune system, migrating to areas of tissue damage and engulfing foreign bodies such as bacteria. Magnification unknown.

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Keywords: anatomy, biconcave, biology, cell, circulatory system, clotting, coloured, corpuscle, corpuscles, disc, discs, erythrocyte, erythrocytes, haematology, haemoglobin, hematology, histology, human body, leucocyte, leukocyte, oxygen transport, polymorphonuclear, red blood cells, scanning electron micrograph, sem, wbc, white

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