Inhibition of the neutrophil respiratory burst to IC-bearing endothelial cells by the MoAbs 2E1 against anti-FcγRII and 3G8 against FcγRIII. The IC-bearing endothelial cells were activated for 4 hours with IL-1 and TNF before the respiratory burst was estimated with the indicated MoAbs at 10 μg/mL under shear (black bars) and static conditions (white bars). For calculation of inhibition refer to Materials and Methods. Values are expressed as means ± SEM of three experiments; *P < .001 for the effect of anti-FcγRII 2E1 versus anti-FcγRIII 3G8 MoAbs.