FIG. 5.

Complement consumption by V. anguillarum serogroup O1 evaluated by a reduction in complement-mediated hemolysis of RaRBC. RaRBC cells were incubated in rainbow trout NS as a control (◊) or with NS pretreated with a smooth strain (ATCC 43305) (□) or with a smooth strain coated with Ab raised against a rough strain (840606-2/5) (▵), a smooth strain (○), or a smooth strain for which the serum was preabsorbed with a rough strain (×). Values shown are means ± standard deviations (n = 4).