STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Breast cancer. Coloured transmission electron micrograph (TEM) of carcinoma cancer cells arising from the milk ducts (dark green) of the breast. Cell nuclei, which contain the cell's genetic information, are light green. A new duct (white) has formed at centre right. Breast cancer is the most common type of cancer in women, and most breast cancers are ductal. The cancer can invade surrounding tissue and spread to other parts of the body (metastasis).
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