| 单词 | syncytiotrophoblast |
| 释义 | > as lemmassynˌcytioˈtrophoblast synˌcytioˈtrophoblast n. the outer, syncytial layer of the trophoblast; (also) one of the cells that make up this layer. ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > embryo parts > [noun] > trophoblast trophoblast1889 plasmoditrophoblast1905 trophectoderm1915 syncytiotrophoblast1926 1926 Jrnl. Anat. (Proc. Anat. Soc.) 61 77 The trophoblast consists of a thick folded cellular layer (cytotrophoblast), on the outer surface of which an irregular and as yet thin deeply staining layer of syncytio-trophoblast is in process of differentiation. 1961 Nature 29 July 510/1 In human beings, the syncytiotrophoblasts are the fœtal cells in direct contact with the maternal bloodstream. 1980 Sci. Amer. Aug. 82/2 (caption) As the invasion proceeds the trophoblast differentiates into two layers, the outer syncytiotrophoblast, which leads the advance into the endometrium, and the cytotrophoblast, which forms a complex system of projections that eventually push through the syncytiotrophoblast into the pools of maternal blood. < as lemmas |
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