Fig. 3From: Ultrastructural changes during osteogenic differentiation in mesenchymal stromal cells cultured in alginate hydrogelThe presence of caspase-3 (red) indicating the apoptotic process in cell from osteogenic group (a–c), and the 3D-reconstruction of the microscopic data showing the extranuclear localization of caspase-3 signals (d); in cell from non-osteogenic group (e–g) the caspase-3 signal was absent; nuclei stained with DAPI (a, e caspase 3; b, f nuclei; c, g merged images; d 3D-reconstruction); scale bar 10 µmBack to article page