STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Leukaemia cell, coloured scanning electron micrograph (SEM). Leukaemia is a type of cancer that affects the bone marrow and white blood cells (leucocytes), disrupting the levels of normal, healthy blood cells and resulting in damage to the immune system (among other symptoms). Possible treatments include anti-cancer drugs, radiotherapy and bone marrow transplants. Magnification: x7000 when printed at 10 centimetres wide.
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