This movie illustrates the early division up to the four-cell stage of a C. elegans embryo depleted of ufd-1 through RNAi. The first C. elegans embryonic division of the P0 zygote is asymmetric and ge
At gastrulation, a subpopulation of epiblast cells constitutes a transient posteriorly located structure called the primitive streak, where cells that undergo epithelial-mesenchymal transition make up
Embryonic mesenchymal cells are dispersed within an extracellular matrix but can coalesce to form condensates with key developmental roles. Cells within condensates undergo fate and morphological chan
Dorsal cell movements during zebrafish gastrulation includes a combination of epiboly, involution, and convergence and extension along the embryonic axis. Note that videos CIL 11818, 11819, and 11820
Mesoderm arises at gastrulation and contributes to both the mouse embryo proper and its extra-embryonic membranes. The mesoderm cells that migrate towards the extra-embryonic region are less motile, a