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Relative trx transcript levels. (A) trxA abundance in the wild-type and ΔtrxC strains; (B) trxC abundance in the wild-type (WT) and ΔtrxA strains. Transcript abundance was determined by quantitative real-time PCR after cells were grown under conditions favorable for microaerophilic growth (4% O2). The gyrA housekeeping gene was used as an internal control. Results shown are from two separate experiments sampled in triplicate. The experiment was repeated again with similar results.
