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. 2017 Apr 27;8(7):1378–1389. doi: 10.1080/21505594.2017.1323164

Figure 4.

Figure 4.

Results of competition, biofilm formation, and serum resistance assays. These results came from 3 T6SS+ and 2 T6SS- isolates. (A) Relative in vitro competition indexes (CIs) for A. baumannii isolates by the presence of T6SS (T6SS+ vs. T6SS–). The CI values shown are the number of A. baumannii divided by the number of E. coli MG1655. Each circle represents the CI of each in vitro replicate. (B) Relative quantity of biofilm in A. baumannii isolates compared with that of ATCC 19606. (C) Serum resistance in A. baumannii isolates of each T6SS+ and T6SS– replicate. Serum resistance as a viability ratio (colony forming units [CFUs] of serum-bacterial suspension/ CFUs of bacterial suspension without normal human serum). The error bars indicate the standard deviations. *, Statically significant difference (P < 0.05).