Molecular versus systemic theories on the genesis of ageing.
D000375:Aging; D000818:Animals; D001481:Basal Metabolism; D001824:Body Constitution; D001921:Brain / Q000033:anatomy & histology / Q000502:physiology; D005796:Genes; D006706:Homeostasis; D006801:Humans; D008954:Models, Biological; D008967:Molecular Biology; D009154:Mutation; D010684:Philosophy