STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Breast cancer cell. Coloured transmission electron micrograph (TEM) of section through a carcinoma cancer cell in a female breast, showing mitochondria (yellow) and secretory granules (blue). Breast cancer is the most common form of cancer in women. It can be treated by surgical removal of the cancerous cells, often combined with radiotherapy and chemotherapy. Magnification: x5,500 when printed 10 centimetres wide.
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