In a first example of a human 3D embryo model, researchers grew ESCs on non-adhesive dishes in media without a differentiation inhibitor or growth factor to develop into embryoid bodies (EBs) that ...

These ESCs differentiated and assembled into radial layers of three embryonic germ tissues, or micropattern colonies. Researchers use these spatially organized colonies to study gene expression and ...

The three germ layers during gastrulation are the endoderm ... a kind of movie that shows – hour after hour – how an embryo ...

The fusion of sperm and egg gametes during human fertilization establishes a diploid zygote and initiates a series of cell divisions that result in a multicellular embryo. The blastocyst stage is ...