Representative images for HUVECs (A, B) and iPSC-derived ECs (C, D) grown on different extracellular matrices [Geltrex™ (A, C) and SP-105 hydrogel (B, D)] with treatment of vehicle (0.5% DMSO), 100 nM nocodazole, and 15 μM suramin from 16 to 24 h. DMSO, dimethyl sulfoxide.