A chimera was a mythological animal in the Antique Greece, but now a biological chimera is an animal with cells from different organisms. In recently published research in Science Advances, researchers show the result of the newest trial to introduce human cells into a mouse embryo. The last human mouse chimera.

This was not the first time that scientist have tried to grow human cells in other animales, but it seems that is all not that easy. That is why the results of this study are so striking because in some of the mouse embryos where the researchers implanted early stem cells, up to 4% of all embryonic cells were human.

Interested? Check the rest of the article at MappingIgnorance.org