Changes in BrdU-labeled PMN counts in the circulation after IV injection of either 2.0 mg/kg dexamethasone (n = 6) or saline (n = 6). BrdU (100 mg/kg) was administered intravenously 48 hours before dexamethasone treatment. Values are expressed as the means ± SEM of the number of BrdU-labeled PMN in circulation. BrdU-labeled PMN counts increased by 12 hours and remained high until 24 hours in both groups. The counts were higher in dexamethasone-treated rabbits than in controls. *P < .05 compared with control; Dex, dexamethasone.