Examples from the Web for blastosphere
A limit is set to increase in the size of a blastosphere by the nature of the material of its walls.The Biological Problem of To-day|Oscar Hertwig
There is a regular segmentation resulting in the formation of a blastosphere with a central segmentation cavity.
The segmentation is uniform, and a blastosphere, formed of a single layer of columnar cells, is the product of it.
When the egg of Amphioxus is in the blastosphere stage we cannot speak of either an epiblast or hypoblast.The Works of Francis Maitland Balfour, Volume 1|Francis Maitland Balfour
One-half of the blastosphere may be pushed in towards the other half.