STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Migrating breast cancer cell. Coloured scanning electron micrograph (SEM) of a migrating breast cancer cell, showing numerous filipodia (thread-like processes) at the leading edge. These features are characteristic of highly mobile cells, and enable cancerous cells to spread rapidly round the body, and invade other organs and tissues (metastasis). The cells may clump to form tumours. 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: x1000 when printed at 10 centimetres wide.
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