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(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. |
| Previous Definitions: | best practice, beta alethine, beta carotene, beta hemolytic streptococcus group B, beta-2-microglobulin | | Next Definitions: | beta-glucan, beta-human chorionic gonadotropin, bevacizumab, bexarotene, Bexxar regimen |
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