Fig. 2.
Sphingomyelinase activity was measured in intact PMNs after FMLP activation, and after phagocytosis of EIgG. Sphingomyelinase activity was measured in control cells, FMLP-activated cells (100 nmol/L), and in cells phagocytosing EIgG (for 30 minutes) after preincubation with FMLP. Values represent the mean ± SD for three experiments.