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Most lung natural killer (NK) cells have CD11bhigh CD27low phenotype. Lymphocytes were isolated from different tissues in normal C57BL/6 mice. (a) Flow cytometry assay determined the expression of CD27 and CD11b on NK cells (CD3− NK1.1+) from different tissues. Zebra plots are representative of three independent experiments using three mice per group. (b) The frequencies of NK cells subsets are shown as mean ± SEM. LN, lymph node; BM, bone marrow. *P < 0·05; ***P < 0·001.
