详细释义
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
双语例句
- The cells of the blastula, called blastomeres, also each receive a full diploid set of chromosomes.
这些囊胚细胞，称卵裂球，每个细胞都有一套二倍体染色体组。 - Cleavage produces a blastula, a sheet of cells rounded into a sphere that in most species surrounds a cavity.
卵裂产生一个囊胚，形成的细胞壁球形排列形成一个空腔。
用作名词 (n.)
用法讲解
- roof of blastula 囊胚盖
- bottom of blastula 胆囊底, 囊胚底...
- blastula stage 囊胚期,中胚期...
相关词汇
- blastosphere 囊胚
【近义词】
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