Figure 2From: Poly (ADP-Ribose) Transferase/Polymerase-1-Deficient Mice Resistant to Age-Dependent Decrease in β-Cell ProliferationIslet morphology of young and old mice before and after a low-dose STZ treatment as judged by staining with H&E. Results are representative of 5–6 slides spanning the whole pancreas of each mouse for at least 4 mice per group. Bar = 50 µm.Back to article page