Studies on the folic acid vitamins. IV. The persistence of amethopterin in mammalian tissues.
D005492:Folic Acid; D005493:Folic Acid Antagonists / Q000494:pharmacology*; D008727:Methotrexate; D014815:Vitamins
D005493:Folic Acid Antagonists; D014815:Vitamins; D005492:Folic Acid; D008727:Methotrexate
FOLIC ACID ANTAGONISTS/pharmacology