title: Excitation spectroscopy of retinal and related polyenes.
mesh_terms: D010777:Photochemistry; D011090:Polyenes / Q000528:radiation effects; D011830:Radiation Effects; D012168:Retinal Pigments / Q000528:radiation effects; D013050:Spectrometry, Fluorescence; D013057:Spectrum Analysis
chemical_list: D011090:Polyenes; D012168:Retinal Pigments