Someya S, Tohyama S, Kameda K, Tanosaki S, Morita Y, Sasaki K, Kang MI, Kishino Y, Okada M, Tani H, Soma Y, Nakajima K, Umei T, Sekine O, Moriwaki T, Kanazawa H, Kobayashi E, Fujita J, Fukuda K.: Tryptophan Metabolism Regulates Proliferative Capacity of Human Pluripotent Stem Cells. iScience. 2021 Jan 26;24(2):102090. doi: 10.1016/j.isci.2021.102090. eCollection 2021 Feb 19.