这个词是什么意思？
A semisynthetic alkylated ESTRADIOL with a 17-alpha-ethinyl substitution. It has high estrogenic potency when administered orally, and is often used as the estrogenic component in ORAL CONTRACEPTIVES.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D004997 · MeSH 2026。
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