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. Author manuscript; available in PMC: 2008 Jan 24.
Published in final edited form as: Curr Opin Gastroenterol. 2007 Jan;23(1):60–66. doi: 10.1097/MOG.0b013e32801145c2

Figure 1. Pathways of azathioprine and 6-mercaptoprine metabolism.

Figure 1

TPMT, thiopurine S-methyltransferase; XO, xanthine oxidase; HGPRT, hypoxanthine guanine phosphoribosyl transferase; IMPDH, inosine monophosphate dehydrogenase; GMPS, guanine monophosphate synthase.