In their latest paper in Development, Martin and colleagues show that the progenitor cells that generate the midline tissues of the zebrafish floor plate, notochord, and hypochord make germ layer decisions after gastrulation based on local canonical Wnt and Notch signaling.
This movie is from this paper and shows the posterior of a zebrafish embryo during somitogenesis. The green cells, labelled by injection of fluorescein dextran, were transplanted from another embryo. In the second part of the movie, a cell that will eventually join the notochord is labelled in red.
You can read their paper here: [ Ссылка ]
