L-selectin expression on combination of band and segmented PMN (A), segmented PMN (B), and band PMN (C) in the bone marrow 6 hours after IV injection of 2.0 mg/kg dexamethasone (n = 4) using the immunocytochemical grading system (see Materials and Methods). Values are expressed as the means ± SEM. The percentage of mature (band + segmented) PMN with strong expression of L-selectin decreased after dexamethasone treatment. Similarly, the percentage of segmented PMN with strong expression of L-selectin was decreased by dexamethasone treatment, but not the percentage of band PMN. The percentage of band PMN with strong expression of L-selectin was smaller than that of segmented PMN at baseline. *P < .05 compared with baseline; †P < .01 compared with segmented PMN at baseline; Dex, dexamethasone.