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an immunosuppressive drug (trade name Imuran) used to prevent rejection of a transplanted organ

an immunosuppressive drug (trade name Imuran) used to prevent rejection of a transplanted organ

An immunosuppressive agent used in combination with cyclophosphamide and hydroxychloroquine in the treatment of rheumatoid arthritis. According to the Fourth Annual Report on Carcinogens (NTP 85-002, 1985), this substance has been listed as a known carcinogen. (Merck Index, 11th ed)