XenonLight CoagulationArgonLightOlfactory BulbXenon RadioisotopesPhytochromeDarknessColorAnesthetics, InhalationPhytochrome AAsthenopiaCystoscopyPhytochrome BSeasonal Affective DisorderInterferometryRadiation Injuries, ExperimentalLightingOptical ImagingPhototherapyPhotoreceptor CellsCircadian RhythmFluorescencePhotosensitizing AgentsRetinal DegenerationHypocotylDark AdaptationAminolevulinic AcidPhotosynthesisTolonium ChlorideMyosin Light ChainsBronchoscopyChlorophyllTime FactorsUltraviolet RaysArabidopsisNitrous OxideRetinaOlfactory PathwaysColor PerceptionErythrosineLasersPerchesPhotoperiodPhotoreceptor Cells, VertebrateArabidopsis ProteinsInfrared RaysPhotoreceptor Cells, InvertebrateMelatonin