Surface density of adherent neutrophils (untreated) after 20 minutes of adhesion experiments at (A) 90 s⁻¹ and (B) 20 s⁻¹ on HK preadsorbed surfaces. (▪) Bare polymer surfaces, (▩) adsorbed with 10 pmol/mL HK, (□) adsorbed with 50 pmol/mL HK, and () adsorbed with 100 pmol/mL HK (n = 3). (*) indicates no adherent cells found. Error bars indicate the standard deviation of the mean. §P < .01 versus bare polymer surface.