FIGURE 2.
Effects of AI-2 on the production of virulence factors of P. aeruginosa PAO1. P, PAO1 group; P+AI-2, PAO1+AI-2 group; triangleP, P. aeruginosa lasR rhlR mutant group; triangleP+AI-2, P. aeruginosa lasR rhlR mutant+AI-2 group. (A) Relative productions of virulence factors of pyocyanin. (B) Elastase activity.