title: Determination of the tautomeric form of the imidazole ring of L-histidine in basic solution by carbon-13 magnetic resonance spectroscopy.
mesh_terms: D002247:Carbon Isotopes; D006639:Histidine; D006863:Hydrogen-Ion Concentration; D007093:Imidazoles; D007536:Isomerism; D009682:Magnetic Resonance Spectroscopy; D011522:Protons
chemical_list: D002247:Carbon Isotopes; D007093:Imidazoles; D011522:Protons; D006639:Histidine