STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Pancreatic cancer cell. Coloured scanning electron micrograph (SEM) of a pancreatic cancer cell. Pancreatic cancer often causes no symptoms until it is well established and untreatable. The irregular cell surface is typical of cancer cells. Cancer cells may clump to form tumours and invade surrounding tissue (metastasis).
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