Size‐Modulated Mesoderm‐Endoderm Divergence and Myocardial Cavitation in Micropatterned Cardioids. - Hoang, Plansky; McKellar, David W.; Kowalczewski, Andrew; Mai, Nhu Y.; Chai, Meng; Lian, Xiaojun L.; Zheng, Yi; Amack, Jeffrey; Tucker, Nathan; De Vlaminck, Iwijn; Yang, Huaxiao; Cosgrove, Benjamin D.; et al. (Advanced Science, 2026)