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|  | The Anatomical Therapeutic Chemical (ATC) classification system |  | 
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 Level 5
 
 L - Antineoplastic and immunomodulating agentsL04 - Immunosuppressive agentsL04A - Immunosuppressive agentsL04AX - Other immunosuppressive agentsL04AX01 - Azathioprine
 
 Azathioprine
 
 
 
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