part of
immediately_preceded_by
life cycle stage
blastula stage
Carnegie stage 03
4.5
Blastula stage with the loss of the zona pellucida and the definition of a free blastocyst.
CS03
EHDAA2:CS03
FMA:295907
HsapDv:0000007
Usually starts between day 4 and day 5 post-fertilization.
XUO:0000132
human_developmental_stage
morula stage