Fig. 6

Serum levels of bacterially produced uremic toxins. ESRD patients showed significantly increased levels of (a) p-cresyl sulfate P < 0.0001 (Kruskal-Wallis test followed by Dunn’s multiple comparisons test.) and (b) indoxyl sulfate P < 0.0001 (Kruskal-Wallis test followed by Dunn’s multiple comparisons test.). N = 7–12 in individual groups. Box and whisker plots illustrate median (line within the box) and minimum and maximum values (whiskers)