title: Expectation and achievement in comparative physiology.
mesh_terms: D000200:Action Potentials; D000222:Adaptation, Physiological; D000557:Ambystoma / Q000502:physiology; D000663:Amphibians / Q000502:physiology; D000818:Animals; D001001:Anura / Q000502:physiology; D005075:Biological Evolution; D003386:Brachyura / Q000502:physiology; D003445:Crustacea / Q000502:physiology; D049832:Decapodiformes / Q000502:physiology; D004175:Diptera / Q000502:physiology; D005399:Fishes / Q000502:physiology; D006054:Goldfish / Q000502:physiology; D006801:Humans; D008954:Models, Biological; D010777:Photochemistry; D010786:Photoreceptor Cells / Q000502:physiology* / Q000648:ultrastructure; D012160:Retina / Q000502:physiology; D012168:Retinal Pigments / Q000032:analysis / Q000502:physiology; D012243:Rhodopsin / Q000502:physiology; D014785:Vision, Ocular
chemical_list: D012168:Retinal Pigments; D012243:Rhodopsin