|  methotrexate 
 
 toxic antimetabolite that limits cellular reproduction by acting as an antagonist to folic acid;
 used to treat certain cancers and psoriasis and rheumatoid arthritis
 • Syn:
 methotrexate sodium, amethopterin
 • Hypernyms:
 antimetabolite, immunosuppressant, immunosuppressor, immunosuppressive drug, immunosuppressive, immune suppressant drug
 
 
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