Measurement of isotope fractionation associated with crystal nucleation: Implications for biocrystallization studies - Chuan Liu; Thomas L. Goût; Yandi Hu; Weiqiang Li; Shichao An; Zehao Zhou; Song Cai; Huazhang Zhao; Jinren Ni; James J. De Yoreo; Donald J. DePaolo (Proceedings of the National Academy of Sciences, 2026)