Fig. 2From: An 8-week diet high in cereal fiber and coffee but free of red meat does not improve beta-cell function in patients with type 2 diabetes mellitus: a randomized controlled trialGlucagon-stimulated beta-cell function (means±SEM) from Δinsulin (a) and ΔC-peptide (b) before and after dietary intervention in a subgroup of participants of the H-RISK (n = 15) and L-RISK groups (n = 13)Back to article page