Making live sperm from stem cells

Three baby mice, each about 2 centimeters long,
produced using sperm derived from iPS cells.
(Photo courtesy of Kyoto University)

Some embryonic mouse stem cells have been turned into healthy sperm.  The stem cells were derived from infertile males and once transformed, were able to impregnate females that delivered healthy babies.  Report August 4th on Kyoto University research at Science Daily News
.