Joubin and Stern conclude that, during the primitive-streak stages of gastrulation ... in both the centre and the periphery of the chick embryo, a BMP-like protein acts to inhibit node induction.

Gastrulation is a crucial stage in embryonic ... lapse microscopy analysis of individual cell movements in living chick embryos. The authors labelled ectoderm cells and filmed them shortly after ...

No one would ever confuse a human being with a mouse, a chicken, or an elephant ... have a hard time saying whether an embryo ...