这个词是什么意思？
A water-soluble polypeptide (molecular weight approximately 8,000) extractable from the corpus luteum of pregnancy. It produces relaxation of the pubic symphysis and dilation of the uterine cervix in certain animal species. Its role in the human pregnant female is uncertain. (Dorland, 28th ed)
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D012065 · MeSH 2026。
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