Three-dimensional encapsulation of adult mouse cardiomyocytes in hydrogels with tunable stiffnessRedirecting to: https://reader.elsevier.com/reader/sd/pii/S0079610719300513?token=5C43E494540BB71214EA977E745004338D11A2011F857696725BC2B22CB1419F73977566C2086883CA2954E0EFBA2585