Figure 4.

The presence of cardiac cells restores scaffold elasticity toward that of cadaveric heart: (a) Representative images of transverse sections of rLA and rLV immunostained for GFP (green) and nuclei (blue). Scale bar: 50 µm. Images were obtained from two different regions in rLA and rLV patches: areas with low cell density (few nuclei) and areas with CMs (high amount of GFP⁺ cells). (b) Young’s modulus quantification by atomic force microscopy of low cell density and with CM areas of rLA, rLV, dLV, and non-decellularized left ventricle (cLV).