Combination chemotherapy:  synergism between a possible folic acid antagonist and ethionine on a solid tumor.
D000970:Antineoplastic Agents; D004359:Drug Therapy, Combination; D005001:Ethionine / Q000494:pharmacology*; D005492:Folic Acid; D005493:Folic Acid Antagonists / Q000494:pharmacology*; D006801:Humans; D009369:Neoplasms
D000970:Antineoplastic Agents; D005493:Folic Acid Antagonists; D005492:Folic Acid; D005001:Ethionine
CYTOTOXIC DRUGS; ETHIONINE/effects; FOLIC ACID ANTAGONISTS/effects