Mitochondrial fusion heterogeneity drives bidirectional tumor phenotypic transition in combined hepatocellular–cholangiocarcinoma - Lin Chen; Dalin Wang; Weidong Qin; Gang Wang; Dan Wu; Jiaying Li; Xingchen Wang; Yinping Wang; Xiacheng Sun; Jing Zhao; Shanshan Guo; Lele Ji; et al. (Proceedings of the National Academy of Sciences, 2026)