Fig. 3From: Oral delivery of exenatide-loaded hybrid zein nanoparticles for stable blood glucose control and β-cell repair of type 2 diabetes micea Photo of the device for excised intestine permeability experiment. Cumulative EXE across b duodenum c jejunum and d ileum walls of the mice, and e Papp values of free EXE, DIS NPs and COM NPs after 2 h incubation. *P < 0.05 compared with free EXE group. (n = 3)Back to article page