K cell activity is independent of both thymus and spleen.
D000818:Animals; D003602:Cytotoxicity, Immunologic; D007113:Immunity, Innate; D007694:Killer Cells, Natural / Q000276:immunology*; D051381:Rats; D011922:Rats, Mutant Strains; D013154:Spleen / Q000276:immunology*; D013156:Splenectomy; D013950:Thymus Gland / Q000276:immunology*