Figure 5.

(a) Glucagon‐like peptide‐1 receptor (GLP‐1R) messenger ribonucleic acid (mRNA) expression levels and (b) β‐cell mass (BCM) in each group. Scatterplots show significant correlation between ex vivo ¹¹¹Indium‐exendin‐4 (¹¹¹In‐Ex4) pancreatic values and (c) GLP‐1R mRNA expression levels as well as (d) β‐cell mass (BCM). Non‐responders, red rhombi and bars (n = 5); responders, green squares and bars (n = 4); non‐diabetic control mice, blue triangles and bars (n = 3). Mice receiving intraperitoneal streptozotocin infusions are shown with gray dotted circles. The data are expressed as the mean ± standard deviation. Responders versus non‐responders, *P < 0.05, **P < 0.01; non‐responders versus control, ^† P < 0.05, ^†† P < 0.01; responders versus control, ^# P < 0.05, ^## P < 0.01. GAPDH, glyceraldehyde 3‐phosphate dehydrogenase; NS, not significant.