CECIL H. FOX / SCIENCE PHOTO LIBRARY CECIL H. FOX / SCIENCE PHOTO LIBRARY
Living cancer cells grown from a human brain tumor. The cells are interconnected by fibrous axons and dendrites. All the tissue visible here is cancerous. Brain tumors may be primary growths arising directly from brain tissue, or they may have spread through the bloodstream from tumors elsewhere in the body (most commonly the lung or breast). Treatment involves radiotherapy or anticancer drugs and if possible, surgical removal. Magnification:250X.
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