FIG. 6.

Serum incubation study for nonpregnancy PMN. The effect of pregnancy serum (50% [vol/vol]) on the fatty acid content and fMLP-stimulated superoxide anion release of normal nonpregnancy PMN was examined. Isolated peripheral blood PMN from nonpregnant subjects were incubated (5 h, 37°C) in either heat-inactivated (56°C, 30 min) autologous serum or heat-inactivated pooled pregnancy sera (n = 6). The data are expressed as mean ± SEM for eight different PMN donors. The results were significantly different (P values) at the following levels: ∗, <0.05; ∗∗, <0.01. Significance was determined with the Wilcoxon rank sum test. RLU, relative light units.