Glut2 expression is dependent on high levels of IPF1/PDX1 expression. Analysis of Glut2 expression in correlation to IPF1 expression by immunohistochemistry on pancreas from 18-week diabetic Rip1/Ipf1▴ (A,E,I), 11-week ND Rip1/Ipf1▴ (B,F,J), 18-week Ipf1+/+ (C,G,K), and 18-week Ipf1+/− mice (D,H,L) (Jonsson et al. 1994). Images are representative of at least 10 different islets. Bar, 20 μm.