Stage 3 (1 hr 5 min)
2 cell stage
Drown by T. Iwamatsu
(Abbr. bm:blastomere, od : oil droplet)
Stage 3 (1 hr 5 min) 2 cell stage:
The first cleavage plane is at a right angle to the axis be- tweenthe second polar body (meiotic spindle) and themicropyle in 60-79% of eggs. The two blastomeres are highly rounded just after cleavage, but are comparatively flat just before the second cleavage.