The effects of RU24858, mometasone and dexamethasone on eosinophil CXCR4 surface expression. Cells were stained and analyzed by using flow cytometry. A typical experiment showing an increase in CXCR4 expression following treatment of cells with mometasone, dexamethasone and RU24858 is indicated in (A). (B) Summary of results expressed as mean fluorescence intensity. Values are the mean ± S.E.M., n = 6. * Indicates P < 0.05, ** P < 0.01 as compared with the respective control in the absence of glucocorticoids.