title: Presence of life-shortening factors in spleens of aged mice of long lifespan and extension of life expectancy by splenectomy.
mesh_terms: D000375:Aging; D000818:Animals; D009052:Leukemia Virus, Murine / Q000472:pathogenicity; D007942:Leukemia, Experimental; D008017:Life Expectancy; D051379:Mice; D011830:Radiation Effects; D012060:Rejuvenation; D013154:Spleen / Q000166:cytology / Q000502:physiology*; D013156:Splenectomy; D014184:Transplantation, Homologous