MANFRED KAGE / SCIENCE PHOTO LIBRARY MANFRED KAGE / SCIENCE PHOTO LIBRARY
Macrophage destroying red blood cells. Coloured scanning electron micrograph (SEM) of a macrophage white blood cell (centre) destroying the body's own red blood cells (smaller cells). The loss of red blood cells in this way causes a condition known as autoimmune haemolytic anaemia. Anaemia is a reduction in the amount of oxygen-carrying red blood cells in the blood, which can lead to fatigue and can be fatal. Autoimmune disorders are those in which the body's immune system, of which macrophages are a part, attacks its own tissues. The symptoms can be treated with blood transfusions, but the underlying cause is unclear. Magnification: x8000 when printed 10cm wide.
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