Fig. 2From: Oral delivery of exenatide-loaded hybrid zein nanoparticles for stable blood glucose control and β-cell repair of type 2 diabetes micea Papp values of free EXE, DIS NPs and COM NPs in Caco-2 cell monolayers, *P < 0.05 compared with free EXE group; b relative Papp values of the COM NPs in Caco-2 cell monolayers treated with various inhibitors, *P < 0.05 compared with the COM NPs group without inhibitor (Control). (n = 3)Back to article page