On the site of action of amethopterin.
D005493:Folic Acid Antagonists / Q000494:pharmacology*; D008099:Liver / Q000494:pharmacology*; D008727:Methotrexate
D005493:Folic Acid Antagonists; D008727:Methotrexate
FOLIC ACID ANTAGONISTS/pharmacology; LIVER/pharmacology