单词	beta-endorphin
释义	beta-endorphin noun be·​ta-en·​dor·​phin ˈbā-tə-en-ˈdȯr-fən  : an endorphin of the pituitary gland having a much greater analgesic potency than morphine Word History First Known Use 1976, in the meaning defined above Medical Definition beta-endorphin noun be·​ta-en·​dor·​phin variants or β-endorphin ˌbāt-ə-en-ˈdȯr-fən, chiefly British ˌbē-tə-  : an endorphin of the pituitary gland with much greater analgesic potency than morphine that occurs free and as the terminal sequence of 31 amino acids in the polypeptide chain of beta-lipotropin
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