Fig. 5.
Western blot analysis of GIP-R and GLP-1R protein expression in rat islets. GIP-R (A and B) and GLP-1 R (C and D) protein expression in whole cell lysates from islets cultured in 5 or 11 mM glucose for 20–24 h. Relative protein expressions of GIP-R (E) and GLP-1 R (F) were normalized to β-actin (B and D). Results are expressed as means ± SE (n = 7 separate islet preparations, ***P < 0.001).