Flow cytometric analysis of the cellular distribution in thymus and lymph nodes of gp130^Y757F/Y757F mice lacking either IL-6 or IL-11Rα. (A) Thymocytes and (B) lymph node cells were subjected to dual-color flow cytometric analysis with the indicated antibodies. For dot plots, x-axis represents FITC intensity, and y-axis represents PE intensity, and numbers indicate the percent of positive cells in each quadrant. For histograms, x-axis represents either FITC or PE intensity, and y-axis represents relative cell number. The numbers indicate the percent of positive cells in the marked regions. These flow cytometric profiles are representative of at least 3 mice of each genotype.