Effect of MoAbs to adhesion molecules on PF-4– and IL-8–induced neutrophil adherence to EC. PMN adherence was induced by 2 μmol/L (□) and 10 μmol/L (▪) PF-4 (upper panel) or by 5 nmol/L (□) and 20 nmol/L (▪) IL-8 (lower panel) in the presence of specific antibodies and an isotype control (10 μg/mL each). Data were calculcated as the percentage of inhibition found in controls that received no antibody and represent the mean ± SD of 3 independent experiments.