The aging process: current theories.
D000375:Aging; D000486:Allergy and Immunology; D003432:Cross-Linking Reagents; D005609:Free Radicals; D006706:Homeostasis; D006728:Hormones / Q000502:physiology; D006801:Humans; D008297:Male; D009154:Mutation; D009490:Neurosecretory Systems / Q000502:physiology; D013269:Stochastic Processes
D003432:Cross-Linking Reagents; D005609:Free Radicals; D006728:Hormones