这个词是什么意思？
The thin, yellow, serous fluid secreted by the mammary glands during pregnancy and immediately postpartum before lactation begins. It consists of immunologically active substances, white blood cells, water, protein, fat, and carbohydrates.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D003126 · MeSH 2026。
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