Fig. 1.

Plasma 25(OH)D levels (panel A) and cytokine concentrations (panel B) in response to LPS infusion in healthy volunteers. In panel A, data are depicted as individual datapoints and corresponding box-plots (whiskers: min-max), and dashed lines indicate median values at baseline (T = 0) and nadir (T = 2 and T = 3). P-value was calculated using Friedman test. *p < 0.05 vs. baseline, calculated using Dunn's post-hoc test. In panel B, data are presented as mean and SEM. Data of 9 subjects are shown in both panels.