MelatoninReceptors, MelatoninReceptor, Melatonin, MT1Receptor, Melatonin, MT2Pineal GlandCircadian RhythmArylalkylamine N-AcetyltransferaseAcetylserotonin O-MethyltransferaseTryptaminesPhotoperiodLightKynuramineDose-Response Relationship, DrugAntioxidantsChromatography, High Pressure LiquidArea Under CurveElectrophoresis, Polyacrylamide GelSleep Disorders, Circadian RhythmHalf-LifeHaemophilus parainfluenzaeEscherichia coliSleepRecombinant ProteinsSheepTime FactorsChromatography, Affinity5-MethoxytryptamineDrug ImplantsAdministration, OralLevofloxacinNetilmicinKineticsOfloxacinSeasonsCross-Over StudiesChronobiology DisordersDouble-Blind MethodLiverRats, Sprague-DawleyBaculoviridaeMolecular Sequence DataBody Weight