G-CSF hypersensitivity of Tg bone marrow cells. (A) The numbers of white blood cells induced by G-CSF (200 μg/kg/d for 5 days) in Tg mice and their wild-type littermate controls. (B) The peripheral blood progenitor cell numbers in Tg mice and their wild-type littermate controls (n = 2 for each) after G-CSF injection (200 μg/kg/d for 3 days). These data are representative of 3 similar experiments.