Speck W T, Rosenkranz H S
Cancer Res. 1976 Jan;36(1):108-9.
Azathioprine (6-[(1-methyl-4-nitroimidazol-5-yl)thio]purine; lmuran) is mutagenic for Salmonella typhirmuium. Demonstration of this mutagenic effect requires a period of anaerobic incubation of the bacteria with the test agent.