Fig. 1

Levels of 5-mdC (a), 5-hmdC (b), 5-fdC (c), 5-cadC (d), 5-hmdU (e) and 8-oxodG (f) in leukocyte DNA from healthy controls (n = 79) and patients with inflammatory bowel disease (IBD, n = 51), adenomatous polyps (n = 67) and colorectal cancer (n = 136). The results presented as medians, interquartile ranges and non-outlier ranges. Raw (5-mdC) and normalized (other parameters) values were subjected to one-way analysis of variance (ANOVA) with LSD and Tukey post hoc tests