单词 | trophoblast |
释义 | trophoblast —trophoblastic, adj. /trof"euh blast', troh"feuh-/, n. Embryol. the layer of extraembryonic ectoderm that chiefly nourishes the embryo or develops into fetal membranes with nutritive functions. [1885-90; TROPHO- + -BLAST] |
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