"Science Daily — Human bone marrow has been used to create early-stage sperm cells for the first time, a scientific step forward that will help researchers understand more about how sperm cells are created. "
Wow! Just think of the possibilities. Male infertility could potentially be circumvented, if they ever navigate the morass of ethical and moral issues involved.
This team has already created sperm cells from mouse embryonic stem cells that were used to fertilizie mice eggs, with seven live births in July of 2006.