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Expression of lrgA and cidA with growth phase. The expression of lrgA (a) and cidA (b) genes was measured in UA159 (▪) and its isogenic lytST mutant (▵) in the early (OD600=0.2), mid (OD600=0.5), late (OD600=0.9) exponential and stationary phases of growth, using real-time RT-PCR. Results are the average of triplicate samples from three independent experiments.
