blastula
Example Sentences
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Body symmetry is determined at the blastula stage.
From Textbooks ● Jun. 9, 2022
In mammals, the blastula forms the blastocyst in the next stage of development.
From Textbooks ● Jun. 9, 2022
Figure 34.22 The rearrangement of the cells in the mammalian blastula to two layers—the inner cell mass and the trophoblast—results in the formation of the blastocyst.
From Textbooks ● Jun. 9, 2022
The blastula, which in some species is a hollow ball of cells, undergoes a process called gastrulation, during which the three germ layers form.
From Textbooks ● Apr. 25, 2013
The germinal layers form from the first closed tubes, the one-layered blastula being converted into the two-layered gastrula by invagination.
From The Evolution of Man — Volume 1 by Ernst Heinrich Philipp August Haeckel
For Ptychodera, extensive EST data from egg, blastulae, gastrulae, larvae, juveniles, adult proboscis, stomochord, and gills defining 34,159 cDNA clones53, and 879,000 Roche/454 RNAseq reads from a mixed library of developmental stages54 were used.
From Nature ● Nov. 17, 2015
Near the end of my visit, our conversation turned from the theoretical consideration of morulas and blastulas to the specific realities of my own condition and treatment.
From Slate ● May 23, 2012
I picture the embryos themselves: round blastulas, with evenly divided cells.
From Slate ● May 23, 2012
