While monitoring the ESC-based embryo model’s growth for important structures, they captured an image eight days after culture that included the epiblast, yolk sac, extra-embryonic mesoderm, and ...

A remnant of the yolk sac merges in the forming embryo into the primitive gut. The role of the yolk sac in early gestation is to supply the embryo with oxygen and nutrients until the formation of ...

a: Lateral view of a 4-week embryo showing the relationship of primordial gut to yolk sac. b: Drawing of median section of the embryo showing the early digestive system and its blood supply.

In the mouse developing embryo, she previously demonstrated a bias at the two ... and the hypoblast, or the yolk sac. When they tracked GFP expression, the team found that one population of cells ...

Created from stem cells, without eggs, sperm, or a womb, the embryo model had a yolk sac and a proto-placenta, resembling a state that real human embryos reach after approximately 14 days of ...