Fig 8.

Effect of the nonbactericidal sample on complement deposition on S. Typhimurium. S. Typhimurium SL1344 bacteria were incubated with PBS, a bactericidal sample (B), the bactericidal sample heat inactivated to eliminate complement (B-C), the nonbactericidal sample (NB), or a mix of the bactericidal and nonbactericidal samples (B+NB). Flow cytometry was carried out to detect the presence of the activated terminal complement components C5b to 9 on the bacterial surface. Percentages of bacteria staining positively for C5b to 9 are indicated.