Natural killer cells in lungs and other tissues and regulation of their activity by suppressor cells.
D000818:Animals; D006801:Humans; D007694:Killer Cells, Natural / Q000276:immunology*; D008168:Lung / Q000276:immunology*; D008264:Macrophages / Q000276:immunology; D050378:T-Lymphocytes, Regulatory / Q000276:immunology*