Normal distribution of mature cells in the bone marrow and spleen of gp130^Y757F/Y757F:Stat3^+/- mice. (A) Bone marrow cells from gp130^+/+ (□), gp130^Y757F/Y757F (▪), and gp130^Y757F/Y757F:Stat3^+/- (▦) mice were cytocentrifuged and stained with May-Grunwald-Giemsa solution. (B) Weight and cellularity of spleens from the above mice. (C) Cytocentrifuge analysis of spleen cells as in panel A. Data from 5 mice of each genotype are expressed as the mean ± SD. ^*P < .05 versus data from gp130^+/+ mice. PM/Myelo indicates myeloblast/myelocyte; PMN/MM, neutrophil/metamyelocyte; L, lymphocyte; M, monocyte; E, eosinophil; and Nuc RBC, nucleated red blood cell.