Figure 5
Survival curve of blue gourami fish infected with E. piscicida wild-type strain (WT) and Δorf1B strain. Fish survival was determined for a period of 10 days. Each group of 20 fish were injected at a dosage of 4.5 × 105 CFU. The result of one representative experiment was presented. Significant difference in fish survival curve was assessed using the Two-tailed long-rank (Mantel–Cox) test, P < 0.001.