blastula
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In mammals, the blastula forms the blastocyst in the next stage of development.
From Textbooks ● Jun. 9, 2022
The blastula, which in some species is a hollow ball of cells, undergoes a process called gastrulation, in which the three germ layers form.
From Textbooks ● Jun. 9, 2022
After fertilization, the zygote undergoes cleavage to form the blastula.
From Textbooks ● Jun. 9, 2022
Further cleavage results in a hollow ball of cells called a blastula.
From Textbooks ● Jan. 1, 2015
If we then imagine the yelk it contains to be dissolved and replaced by a clear liquid, we have the characteristic blastula of the higher mammals.
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
I picture the embryos themselves: round blastulas, with evenly divided cells.
From Slate ● May 23, 2012
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
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