blastula; blastosphere
Embryological term for the hollow sphere of cells formed during early development.
胞胚は受精卵の卵割によって形成される。
The blastula is formed by cleavage of the fertilized egg.
Standard kanji spelling for the embryological term.
The term is composed of 胞 (cell, sac) and 胚 (embryo), reflecting its meaning as an early embryonic stage.