Fig. 1From: Oxidative-antioxidative status and hepatic and renal factors following melatonin administration in castrated and intact dogsSchematic drawing of the study design. Twenty intact male adult dogs were aligned into four equal groups (n = 5): melatonin, castrated, control, and castrated with melatonin treatment (Cast+Mel). Ten dogs were castrated (castrated and Cast+Mel groups) and ten dogs were treated with melatonin (melatonin and Cast+Mel groups)Back to article page