PubMed:12587019 / 640-895 JSONTXT

{"project":"PubMed_ArguminSci","denotations":[{"id":"T4","span":{"begin":0,"end":255},"obj":"DRI_Background"}],"text":"Salicylazosulfapyridine is a suspect carcinogen because reductive cleavage of the azo linkage yields a p-amino aryl sulfonamide (sulfapyridine), and a related p-amino aryl sulfonamide (sulfamethoxazole) has been shown to produce thyroid neoplasms in rats."}