NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 8,199 terms related to cancer and medicine.

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beta-endorphin
(BAY-tuh en-DOR-fin)
A substance produced in the brain, especially in the pituitary gland, that blocks the sensation of pain. It is produced in response to pain, exercise, and other forms of stress. It is a type of polypeptide hormone.