cytotrophoblastn.

1905 Proc. Royal Soc. B. 76 393 A slight tendency to a heaping up of the trophoblast occurs, in which a distinction into a plasmoditrophoblast and a cytotrophoblast can be detected.

1926 Proc. Anat. Soc. 77 in Jrnl. Anat. 61 The trophoblast consists of a thick folded cellular layer (cyto-trophoblast), on the outer surface of which an irregular and as yet thin deeply staining layer of syncytio-trophoblast is in process of differentiation.

1959 A. Hughes Hist. Cytol. vi. 136 The distinction between a cellular tissue and a syncytium—as, for instance, between the cytotrophoblast of the human placental villi and the adjacent syncytiotrophoblast—is unmistakeable.

1980 Sci. Amer. Aug. 82/2 (caption) The trophoblast differentiates into two layers, the outer syncytiotrophoblast..and the cytotrophoblast.

2001 J. Coad & M. Dunstall Anat. & Physiol. for Midwives viii. 162/1 The result is the primary stem villus, an outgrowth of cytotrophoblast covered by syncytiotrophoblast.