Effect of rIvy on the infectivity of Edwardsiella tarda TX01. Turbot were infected with E. tarda TX01 or TX01 plus rIvy. Bacterial recovery from blood, kidney, liver, and spleen was determined at 4 h postinfection and is presented as the number of CFU per gram of tissue (kidney/liver/spleen) or per milliliter of blood. Data are the means of three independent experiments and presented as means ± SEMs. **, P < 0.01; *, P < 0.05.