Peripheral blood profile of gp130^Y757F/Y757F (F/F) mice lacking IL-6 or IL-11Rα. (A) Platelet counts, (B) total white blood cell (WBC) counts, and (C) WBC differentials. Data from 5 mice of each genotype are expressed as the mean ± SD. *P < .05 versus data from gp130^+/+ mice; n = neutrophils, L = lymphocytes, M = monocytes and E = eosinophils.