title: Proton magnetic resonance studies of folate, dihydrofolate, and methotrexate. Evidence from pH and concentration studies for dimerization.
mesh_terms: D000630:Aminopterin; D002264:Carboxylic Acids; D055598:Chemical Phenomena; D002621:Chemistry; D003903:Deuterium; D005492:Folic Acid; D006863:Hydrogen-Ion Concentration; D046911:Macromolecular Substances; D009682:Magnetic Resonance Spectroscopy; D008433:Mathematics; D008727:Methotrexate; D008961:Models, Structural; D009994:Osmolar Concentration; D011522:Protons; D011622:Pterins; D013056:Spectrophotometry, Ultraviolet
chemical_list: D002264:Carboxylic Acids; D046911:Macromolecular Substances; D011522:Protons; D011622:Pterins; D005492:Folic Acid; D003903:Deuterium; D000630:Aminopterin; D008727:Methotrexate