a: blastocyst ~
b: a hollow ball
What:
"A blastocyst is like a hollow ball composed of many cells. Cells on one side of the blastocyst become the inner cell mass, which is destined to become the embryo proper."
Useful?
Writer: Not Stated
LCC:
Where:
Date: Oct 28 2017 6:14 PM
# 11575 Critique Analogy