Fig. 1From: Low-dose oral cholecalciferol is associated with higher numbers of Helios+ and total Tregs than oral calcitriol in renal allograft recipients: an observational studyAbsolute numbers of Treg subsets among the different study groups. Asterisks in the diagram indicate adjusted p values of ≤ 0.005. The exact p values for the pairwise comparisons are shown in Table 2Back to article page