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Fluorescence micrographs of HUVECs seeded on PEGDA scaffolds micropatterned with CMP/RGD and further modified with CMP-QK solution by partial submersion. The spatial variation in the level of angiogenic QK signal induced spatially distinct cell morphology; elongated morphology at submerged regions (high CMP-QK signal) undifferentiated cobblestone morphology at unsubmerged regions (low CMP-QK signal). Cells were stained with DAPI (blue), phalloidin (green), and CD31 (red).
