11:45 AM. 450. Conductive Heart-derived ECM Hydrogels to Improve hiPSC-CMs Maturation.Jiazhu Xu, PhD1, Joel Aboagye2, Yufeng Wen1, Marcella Edwards2, Zining Yang1, Huikang Fu1, Huaxiao Yang, PhD.2, Yi Hong, PhD1 1The University of Texas at Arlington, 2University of North Texas