OpsinsRod OpsinsCone OpsinsRetinal Cone Photoreceptor CellsMicrospectrophotometryRhodopsinRetinaldehydeRetinal PigmentsLight Signal TransductionVision, OcularCompound Eye, ArthropodPhotoreceptor Cells, VertebrateRetinal Rod Photoreceptor CellsHydrozoaPhylogenyRetinaPhotoreceptor Cells, InvertebratePoeciliaCichlidsColor VisionTransducinG-Protein-Coupled Receptor Kinase 1Drug Inverse AgonismButterfliesPineal GlandCyprinodontiformesEye ProteinsFish ProteinsCrustaceaLightEvolution, MolecularEyePhotoreceptor CellsInvertebratesMolecular Sequence Datacis-trans-IsomerasesLizardsArrestinArthropodsThyroid Hormone Receptors betaAmino Acid SequenceGene DuplicationDark AdaptationUrodelaRetinitis PigmentosaAmbystomaRetinal Photoreceptor Cell Outer SegmentIn Situ HybridizationVertebratesColorFluorescent Antibody Technique, IndirectArthropod ProteinsColor PerceptionSequence Homology, Amino AcidFishesSequence Alignment