title: Neuronal specificity revisited.
mesh_terms: D000818:Animals; D001001:Anura; D002454:Cell Differentiation; D003530:Cyprinidae; D009434:Neural Pathways; D009474:Neurons / Q000502:physiology; D009482:Neurophysiology; D009899:Optic Lobe, Nonmammalian / Q000196:embryology / Q000502:physiology; D010641:Phenotype; D012160:Retina / Q000196:embryology / Q000502:physiology; D014794:Visual Fields; D014795:Visual Pathways; D014981:Xenopus