Fig. 3
From: Xanthine oxidase and aldehyde oxidase contribute to allopurinol metabolism in rats
a Metabolic pathways of N-1-methylnicotinamide by aldehyde oxidase (AO), and (b) Effect of febuxostat on aldehyde oxidase (AO) activity in Crl:CD and Jcl:SD rats. Aldehyde oxidase (AO) activity was estimated as the RP value. Each bar represents the mean ± S.D. of six experiments. ** p < 0.01; N.S. not significant