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. 2015 Feb 13;10(2):e0118295. doi: 10.1371/journal.pone.0118295

Fig 5. Deletion of hns enhances tryptophanase expression.

Fig 5

WT and mutants containing a tnaA-lacZ promoter fusion were grown in LB to stationary phase at 37°C. β-galactosidase activity (Miller units) was measured as an indicator of promoter activity. Each value represents the mean of at least three independent experiments. Error bars denote the STDEV.