这个词是什么意思？
Cells lining the outside of the BLASTOCYST. After binding to the ENDOMETRIUM, trophoblasts develop into two distinct layers, an inner layer of mononuclear cytotrophoblasts and an outer layer of continuous multinuclear cytoplasm, the syncytiotrophoblasts, which form the early fetal-maternal interface (PLACENTA).
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D014327 · MeSH 2026。
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