Figure 6
Pathogenicity of A. pleuropneumoniae biofilm (BF) and planktonic (PK) grown bacteria for mice. A Survival rates of mice (6 per group) intranasally infected with PK and BF, respectively, at 4 × 106 CFU in 20 μL for each mouse. Log rank (Mantel-Cox) test was performed for statistical analysis (*, p < 0.05). B Bacterial loads in the lungs of mice intranasally infected with PK or BF at a dose of 2 × 106 CFU per mouse. Dotted line: the limit of detection (400 CFU/g). Two-tailed Mann–Whitney test was used for statistical analysis (*, p < 0.05; ns: not significant).