Human stem cells, in this case made from adult skin cells, can give rise to any sort of human cell. Some scientists would like to insert such cells into nonhuman, animal embryos, in hopes of one day growing human organs for transplantation. Science Source
http://www.npr.org/sections/health-shots/2015/11/06/454693391/should-human-stem-cells-be-used-to-make-partly-human-chimeras
trans-bio-tex.com 