No it's not creepy and not it's not an embryo. Read just the first bit of information to know why. >Scientists at the Weizmann Institute in Israel found that stem cells from mice could be made to self-assemble into early embryo-like structures with an intestinal tract, the beginnings of a brain, and a beating heart. They've created a... clump of cells using stem cells that formed potential organs. Not functional or grown, but potential.