Fig. 4.

Effect of different opsonization procedures on killing of Salmonellae by African adult washed peripheral blood cells. In vitro killing of (A) serum-sensitive S. Typhimurium D23580 and (B) serum-resistant S. Typhimurium D26104 at 45, 90, and 180 min. Negative values correspond with a decrease in viable Salmonellae compared with the initial concentration of 10⁵ cfu/mL Abbreviations as for Fig. 2: Unop (filled circle, solid line); ab-def (filled triangle, solid line); immune (filled square, solid line); C6-def (empty square, dashed line); HI (empty triangle, dashed line); IgG (empty circle, dashed line). Data are mean ± SD of three experiments.