Folic acid: discovery and the exciting first decade.
D000630:Aminopterin / Q000494:pharmacology; D000818:Animals; D001205:Ascorbic Acid / Q000502:physiology; D005492:Folic Acid / Q000266:history* / Q000502:physiology; D006801:Humans; D008727:Methotrexate / Q000494:pharmacology
D005492:Folic Acid; D000630:Aminopterin; D001205:Ascorbic Acid; D008727:Methotrexate