But this first study of developing human sperm stem cells revealed this process was much more complex in humans than had been previously understood. (sciencedaily.com)
If the same feat can be done with human sperm stem cells, scientists say the technique could offer a much - sought alternative to destroying human embryos for acquiring ES - like cells. (sciencemag.org)
If true, this would be the first method to complete the final steps in making human sperm, although other labs have managed to push cells through some of the earlier stages. (newscientist.com)