Studies of the mechanism of resistance to folic acid antagonists by leukemic cells.
D000818:Animals; D000963:Antimetabolites; D005492:Folic Acid / Q000031:analogs & derivatives; D005493:Folic Acid Antagonists / Q000494:pharmacology*; D007942:Leukemia, Experimental
D000963:Antimetabolites; D005493:Folic Acid Antagonists; D005492:Folic Acid
FOLIC ACID ANTAGONISTS/effects; FOLIC ACID/derivatives; LEUKEMIA/experimental