Via ABC News, news of yet another population of multipotent adult stem cells: "In the report Hasenfuss and his team described how they isolated the sperm-producing stem cells from mice testes. The cells, which they call multipotent adult germline stem cells (maGSCs), under certain conditions, acted like embryonic stem cells. When the researchers injected the cells into early embryos they found the cells contributed to the development of different organs. ... However, much more research is required before the similarities and differences between these testes cells and embryonic stem cells are understood, and before their potential for use in therapy can be properly assessed."