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A and B: pancreatic sections from a mouse 14 days after STZ administration (A) and a saline-treated mouse (B) stained for glucagon (green), apoptosis (TUNEL; red), and nuclei (DAPI; blue). C and D: pancreatic sections from a mouse 14 days after STZ administration (C) and a saline-treated mouse (D) stained for glucagon (green), replication (Ki67; red), and nuclei (DAPI; blue). Images were acquired at ×400 magnification.
