A team of scientists has found a way of creating sperm from the stem cells of infertile men.
According to News.com.au, French researchers say they don't yet know whether the seed will work.
The team at Kallistem biotech company in Lyon said the method was patented in June and had taken to 20 years to refine.
However, it hasn't yet been validated through publication in a peer-reviewed science journal and the scientists need to carry out more tests to see if it could actually help infertile men become fathers.
