J. L. CARSON, CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY J. L. CARSON, CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY
Lung cancer cell. Coloured scanning electron micrograph (SEM) of an adenocarcinoma cancer cell from a lung cancer. Its uneven surface and cyto- plasmic projections are seen. Clumps of cancerous cells form tumours, which invade and destroy surrounding tissues, and can travel to distant parts of the body to seed secondary tumours, or metastases. Malignant cells proliferate and grow in a chaotic manner, with defective cell division retained within each new generation of cells. Lung cancers are usually caused by tobacco smoking, and are fatal unless caught early. Magnification unknown.
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