| 单词 | blastula |
| 释义 | blastula (once / 88867 pages) n WORD FAMILY blastula: blastulae USAGE EXAMPLESMy cycle is now a regular 28 days; my endometrium waits properly—two full weeks—for the blastula to implant. Slate(May 23, 2012) In removing a blastula, you are indeed destroying something, but what exactly — a potential life? Time(Nov 10, 2011) Consider its mode of division, and the formation of the blastula, gastrula, and germinal layers. Hertwig, Oscar, The Biological Problem of To-day—Pr...(2011) n early stage of an embryo produced by cleavage of an ovum; a liquid-filled sphere whose wall is composed of a single layer of cells; during this stage (about eight days after fertilization) implantation in the wall of the uterus occurs Syn|Hypo|Hyper blastosphere blastocyst, blastodermic vessicle the blastula of a placental mammal in which some differentiation of cells has occurred conceptus, embryo, fertilized egg an animal organism in the early stages of growth and differentiation that in higher forms merge into fetal stages but in lower forms terminate in commencement of larval life |
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