Genista mice lack mature neutrophils. (A and B) Representative FACS profiles of blood, spleen, and BM cells from WT or Genista mice stained with anti-CD11b and anti-Ly6G mAb (A) or anti-CD11b and anti-Ly6C mAb (B). Percentage of neutrophils (CD11bhigh Ly6Ghigh; A) and monocytes (CD11binter Ly6Chigh; B) are indicated. Data are representative of 6–10 independent experiments. n = 3–4. (C) Gating strategy for identification of DC populations in the spleen of WT (top) or Genista (bottom) mice. Live, single, CD11c+ Lin− (CD3, CD19, NK1.1) spleen cells were plotted for CD11c and Siglec-H expression, with numbers indicating the percentage of pDCs (CD11c+ Siglec-H+). CD11chigh DCs were then subdivided in CD11bhigh CD8α− (conventional DCs) and CD11b− CD8α+ (CD8α DCs) cells. Numbers indicate the percentage of each population. Data represent two experiments. n = 4. (D) Histograms representing the total numbers of neutrophils, monocytes, and DCs subpopulations in the spleen of WT (black) or Genista (white) mice. Live, single, Lin− (CD3, CD19 NK1.1, Ly6G), CD115+ CD11b+ monocytes were further subdivided into inflammatory (Ly6C+) and resident (Ly6C−) monocytes. Experiments were performed two to five times. n = 3–4. Statistical significance was determined with a Mann-Whitney test. *, P < 0.05; **, P < 0.01; ***, P < 0.001. (E) Representative FACS profiles of F4/80 and CD11b expression on BMMs from WT or Genista mice obtained after 8 d of in vitro differentiation of BM cells with GM-CSF. (F) CD80, CD69, and CD86 cell surface expression of BMMs from WT (top) or Genista (bottom) mice after overnight incubation with LPS (black histograms) or medium (filled gray histograms). (G) Representative FACS profiles of MHC-II and CD11c expression on BMDCs from WT or Genista mice obtained after 8 d of in vitro differentiation of BM cells with GM-CSF. (H) CD80, CD69, CD86, and MHC-II cell surface expression on BMDCs from WT (top) or Genista (bottom) after overnight incubation with LPS (black histograms) or medium (filled gray histograms). Experiments were performed twice. n = 3.