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Colon cancer, SEM

Colon cancer, SEM

M132/0661

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Credit

STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY

Caption

Colon cancer. Coloured scanning electron micrograph (SEM) of the mucosal surface of a cancerous colon (large intestine). Numerous empty holes (small black dots) are seen, which usually contain goblet cells. Goblet cells secrete mucus to lubricate the surface, and their absence may be due to the cancer. Epithelial cells make up the rest of the surface, and are covered in many small (not visible) absorptive microvilli. Colon cancer is one of the most common cancers in the developed world. Symptoms include faecal blood, constipation or diarrhoea, and abdominal pain. Treatment involves surgery and chemotherapy. Magnification: x200 at 6x7cm size.

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