Figure 3

Cell viability. For determination of cell viability in normal (a, b) and STZ-induced pancreatic islets cocultured with rBM-MSCs (c, d), PI/FDA staining was performed. The small bright spots in the fluorescent micrographs correspond to the intense red staining of PI-positive (dead) cells. The diffusely stained regions correspond to the FDA-stained (live) cells (Scale bars=50 μm)