Functions of FGF2 in Testis (IMAGE) Shinshu University Caption FGF2 expands RARG expressing subset of SSCs FGF2 facilitates RA action toward proper spermatogenesis. Credit Seiji Takashima Ph.D., the Faculty of Textile Science and Technology in Shinshu University 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.