extremely significantp < 0.01
The self-agglutination rate of strain S584Δ galU was 3.47 times faster than that of strain S584, and the difference was extremely significant ( p < 0.01), but there was no significant difference between the self-agglutination rate of S584 and S584Δ galU R strains ( p > 0.05; Figure 2 ).