Figure 2.
Plasma gastrointestinal hormones concentrations. (a) grhelin; (b) GLP-1; (c) GIP; (d) PP; values are expressed as the mean ± SEM (n = 20). GIP, gastric inhibitory polypeptide; GLP-1, glucagon-like peptide-1; LMM, linear mixed-effects model; PP, pancreatic polypeptide; SEM, standard error of the mean.