The gastrula, finally, is the two-layered sac formed from the blastula, typically by invagination of its wall.
"Form and Function" by E. S. (Edward Stuart) Russell
Is there any considerable difference between the size of the egg and the size of the blastula and gastrula?
"A Guide for the Study of Animals" by Worrallo Whitney
Consider its mode of division, and the formation of the blastula, gastrula, and germinal layers.
"The Biological Problem of To-day" by Oscar Hertwig
When the blastula is oval and free-swimming the inner mass is formed by unipolar immigration from the hinder pole.
"Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 2" by Various
Here's the video for Count Blastula 's 'A Way from Me'.
Count Blastula Members of Count Blastula are: Adam Fisher on acoustic guitar, Jim Dunham on drums, Max McKee on bass and painter Fletcher Crangle.
Hear the name Count Blastula , and you might think it's a heavy metal band.
Blastula ': Flaming Lips documentary debuts at deadCENTER.