FIGURE 5.

Bacterial killing of E. ictaluri LAVs opsonized with sera from challenged fingerlings in catfish peritoneal macrophages. Black columns indicate the colony numbers at 0 h, and gray columns indicate the colony numbers at 10 h, dark gray color columns indicate the colony numbers after 24 h of in vitro infection. ^a,bPresence of letters on top of bars indicates group differences in the uptakes with bars with different letters being different from each other and from bars without a letter designation (P < 0.05). The data represent the mean of MFI of macrophage phagocytic uptake from five fish ± SD.