这个词是什么意思？
A class of opioid peptides including dynorphin A, dynorphin B, and smaller fragments of these peptides. Dynorphins prefer kappa-opioid receptors (RECEPTORS, OPIOID, KAPPA) and have been shown to play a role as central nervous system transmitters.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D004399 · MeSH 2026。
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