单词 | entoblast |
释义 | > as lemmasentoblast entoblast n. Brit. /ˈɛntə(ʊ)blɑːst/ , /ˈɛntə(ʊ)blast/ , U.S. /ˈɛn(t)əˌblæst/ (a) the nucleolus of a cell; (b) an inner germ-layer of an embryo; = endoblast n. at endo- prefix and comb. form , hypoblast n. 2. [After German Entoblast (1853 or earlier).] ΚΠ 1864 Webster's Amer. Dict. Eng. Lang. Entoblast, the nucleolus of a cell. 1892 E. L. Mark tr. O. Hertwig Text-bk. Embryol. v. 86 The inner germ-layer (entoblast or entoderm) lines the cœlenteron and provides for nutrition. 1926 H. E. Jordan & J. E. Kindred Textbk. Embryol. ix. 67 We are compelled to postulate an earlier solid stage of the blastula in which ectoblast (epiblast) and entoblast (hypoblast) are prelocalized. 1945 W. J. Hamilton et al. Human Embryol. viii. 105 An entoblast which gives origin to the epithelial linings of the digestive and respiratory tracts. < as lemmas |
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