The arterio-venous difference in PMN (A), band cell (B), and PMN^BrdU counts (C) after IV IL-8 (2.5 μg/kg) (n = 4). Values are the ratio of arterio-venous counts and are expressed as a percentage (see text for formula). These ratios were lower than baseline values at 3 minutes for PMN and 3 and 5 minutes for band cell and PMN^BrdU after IL-8 administration. *P < .05v baseline. Values are mean ± SEM.