英语词汇“paragastrula”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	paragastrula
释义	‖ paraˈgastrula Embryol. [f. para-¹ 1 + gastrula.] A kind of gastrula occurring in some sponges, produced by invagination of the flagellate cells within the granular. Hence paraˈgastrular a., of or pertaining to a paragastrula; paragastruˈlation, the formation of a paragastrula. 1887Sollas in Encycl. Brit. XXII. 425/1 The two-layered sac thus produced is a paragastrula; its outer layer, known as the epiblast, gives rise to the ectoderm, the inner layer or hypoblast to the endoderm.1890Cent. Dict., Paragastrular..Paragastrulation.
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