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Brain cancers hide behind a protective barrier in the brain and attack white blood cells.

Illustration of brain cancer

Brain cancers involve uncontrolled cell growth that forms tumors in blood vessels, cranial nerves, lymphatic tissue and other parts of the brain. They also hide behind the blood-brain barrier--a protective network of blood vessels and cells that filters foreign substances--including anticancer drugs--from easily flowing to the brain.

Credit: NSF

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