ScienceNew CiRA leader seeks diversification after relying 'too much' on Nobel winner YamanakaKyoto University professor Shinya Yamanaka remains the standard-bearer for research on induced pluripotent stem cells. (Nikkei montage/Source photos by Shinya Yamanaka and Kosaku Mimura)YASUKI OKAMOTO and SATOSHI KAWAHARAMay 28, 2026 02:05 JSTOSAKA/TOKYO -- In the two decades since the discovery of induced pluripotent stem cells by Kyoto University professor Shinya Yamanaka, the university's core research center for the technology "relied too much on our star researcher," said Koji Eto, who became its director in April.