IMAGE (IMAGE) National Institutes of Natural Sciences Caption <p>A. Schematics for the generation of rats with mouse gametes. Mouse spermatids isolated from the rat testis are injected into unfertilized mouse eggs to produce viable mice. <p>B. Section of rat testis. Mouse iPS cell-derived green sperm, spermatids and immature germ cells are observed in the rat testis.</p> Credit Toshihiro Kobayashi Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.