Japanese and British researchers have found out that healthy sperm can be produced by making a kind of stem cell called iPS from sterile mice.

A joint team from Kyoto University's Graduate School of Medicine and a British research institute developed the method.

Researchers used the cells of sterile mice that suffer from abnormal chromosomes to make induced pluripotent stem cells. The iPS cells can develop into all kinds of tissue cells. They found that about 10 percent of the developed iPS cells do not have abnormalities in chromosomes.

The healthy iPS cells were grown into cells that become sperm and then injected into the sterile mice.

Researchers say the treated mice produced sperm able to fertilize eggs.

Source: ANNnewsCH