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Effect of 90% normal chicken serum on survival of strain MT78 and its mutants PA68 (fimH), DM34 (fim), and BEN2694 (K1−) and complemented strain BEN2700 (K1+) (A) and of strain χ7122 and its derivatives χ7145 (O78−), χ7193 (O1), and χ7168 (O26) and complemented strain χ7145 (pYA3255) (O78+) (B). Each point represents the mean for four to six experiments.
