blastula
英 ['blæstʃələ] 美 ['blæstʃələ]

n.

囊胚；

变形

复数：blastulas

英英释义

blastula[ 'blæstjulə ]

• 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

  同义词：blastodermic vesicle

双语例句

用作名词(n.)

1. 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。
2. 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。

权威例句

Patterning Xenopus blastula
Patterning the Xenopus blastula
Blastula-stage stem cells can differentiate into dopaminergic and serotonergic neurons after transplantation
Transplantation of Living Nuclei From Blastula Cells into Enucleated Frogs' Eggs.
Surface activity and locomotion of Fundulus deep cells during blastula and gastrula stages ☆
Cell lineage of zebrafish blastomeres. III. Clonal analyses of the blastula and gastrula stages.
Analysis of spatial and temporal gene expression patterns in blastula and gastrula stage chick embryos
"Transplantation of Living Nuclei from Blastula Cells into Enucleated Frogs' Eggs"(1952), by Robert Briggs and Thomas J. King
A functional test for maternally inherited cadherin in Xenopus shows its importance in cell adhesion at the blastula stage.
Activation of muscle-specific actin genes in xenopus development by an induction between animal and vegetal cells of a blastula