Expression as mean with standard deviation (SD), absolute reduction and percentage as well as p-value of the ascending colon in children with Crohn’s disease (CDP) and children with ulcerative colitis (UCP) compared to age matched controls (CP). Pediatric (P); adult (A); cystathionine-γ-lyase (CSE); 3-mercapto-sulfurtransferase (3-MST); ethylmalonic encephalopathy 1 protein (ETHE1); sulfide:quinone oxidoreductase (SQOR) and thiosulfate sulfurtransferase (TST). * = p-value < 0.05, ** = p-value < 0.01.