title: The oldest old.
authors: Harvard University.
authors: T T
authors: TT
authors: Perls
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000818:Animals; D004330:Drosophila / Q000502:physiology; D005260:Female; D006801:Humans; D008136:Longevity / Q000235:genetics / Q000502:physiology; D008297:Male