title: Decreased natural killer cell activity in Cowden's syndrome.
mesh_terms: D000328:Adult; D001943:Breast Neoplasms / Q000276:immunology*; D005260:Female; D006222:Hamartoma / Q000276:immunology*; D006801:Humans; D007694:Killer Cells, Natural / Q000276:immunology*; D008875:Middle Aged; D012878:Skin Neoplasms / Q000276:immunology*; D013577:Syndrome