the authors used two different methods to block the activity of the Wnt-PCP signalling pathway in the intercalation region of the chick embryo and showed that intercalation and primitive streak ...

A dissected chick embryo was cultured and live imaged ... indicating an asymmetrical bilateral rotation of the cellular flow during primitive streak extension. (C) Speed plot, indicating the ...

In this study, the team temporarily recreated a more primitive, dinosaur-like feather ... they discovered that stimulating the Shh pathway in chicken embryos could transform scales into feathers.