A hiPSC-derived Lineage-Specific Vascular Smooth Muscle Cells-on-a-Chip Identifies Aortic Heterogeneity Across Segments Gang Liu, Jun Li, Yang Ming, Bitao Xiang, Yibing Chen, Nan Chen, Mieradilijiang Abudupataer, Shichao Zhu, Xiaonan Zhou, Xiaoning Sun, Yongxin Sun, Hao Lai, Sisi Feng, Chunsheng Wang and Kai Zhu Abstract Aortic aneurysm (AA), a potentially lethal condition with the characteristic of aortic dilatation, can only be treated by surgical or endovascular procedures.