blastulas
n.
胞胚；囊胚
英語翻譯 Noun:
-
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
造句
用作名詞(n.)
- The cells of the blastula, called blastomeres, also each receive a full diploid set of chromosomes.
這些囊胚細(xì)胞，稱卵裂球，每個細(xì)胞都有一套二倍體染色體組。
- Cleavage produces a blastula, a sheet of cells rounded into a sphere that in most species surrounds a cavity.
卵裂產(chǎn)生一個囊胚，形成的細(xì)胞壁球形排列形成一個空腔。
常用短語
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roof of blastula
囊胚蓋
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bottom of blastula
膽囊底, 囊胚底...
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blastula stage
囊胚期,中胚期...
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