Fig. 4From: Oxidative-antioxidative status and hepatic and renal factors following melatonin administration in castrated and intact dogsChanges of renal function factor concentrations (Mean ± SEM) in the control, melatonin, castrated and castrated+melatonin groups during the one-month study. The mean concentrations were compared using one-way and two-way repeated-measures analysis of variance (ANOVA) and Tukey’s multiple comparisons tests (BUN: blood urea nitrogen)Back to article page