retinoate biosynthesis II
Taibi G, Di Gaudio F, Nicotra CMA. Xanthine dehydrogenase processes retinol to retinoic acid in human mammary epithelial cells. Journal of Enzyme Inhibition and Medicinal Chemistry. 2008 Jan 01;23(3):317–27. doi: 10.1080/14756360701584539.