Neuronal replacement in adulthood.
D000375:Aging; D000818:Animals; D001369:Axons / Q000502:physiology; D001921:Brain / Q000033:anatomy & histology / Q000254:growth & development / Q000502:physiology; D002171:Canaries / Q000502:physiology*; D002470:Cell Survival; D004247:DNA / Q000096:biosynthesis; D003712:Dendrites / Q000502:physiology / Q000648:ultrastructure; D004027:Diencephalon / Q000166:cytology; D013196:Dihydrotestosterone / Q000502:physiology; D004958:Estradiol / Q000502:physiology; D005260:Female; D007858:Learning / Q000502:physiology*; D008297:Male; D009434:Neural Pathways / Q000502:physiology; D009474:Neurons / Q000502:physiology*; D012621:Seasons; D012727:Sex Characteristics; D013569:Synapses / Q000502:physiology / Q000648:ultrastructure; D013687:Telencephalon / Q000166:cytology; D013739:Testosterone / Q000502:physiology; D014828:Vocalization, Animal / Q000502:physiology
D013196:Dihydrotestosterone; D013739:Testosterone; D004958:Estradiol; D004247:DNA