title: Carbon-13 magnetic resonance investigation of retinal isomers and related compounds.
mesh_terms: D002247:Carbon Isotopes; D004735:Energy Transfer; D007536:Isomerism; D009682:Magnetic Resonance Spectroscopy; D012172:Retinaldehyde / Q000031:analogs & derivatives*; D012243:Rhodopsin; D014801:Vitamin A / Q000031:analogs & derivatives*
chemical_list: D002247:Carbon Isotopes; D014801:Vitamin A; D012243:Rhodopsin; D012172:Retinaldehyde