这个词是什么意思？
One of the three major groups of endogenous opioid peptides. They are large peptides derived from the PRO-OPIOMELANOCORTIN precursor. The known members of this group are alpha-, beta-, and gamma-endorphin. The term endorphin is also sometimes used to refer to all opioid peptides, but the narrower sense is used here; OPIOID PEPTIDES is used for the broader group.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D004723 · MeSH 2026。
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