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Regulator expression during growth in air and elevated CO2. Transcripts of genes indicated were detected using RT-PCR. Data shown are representative of three experiments using RNA prepared from different cultures. Lanes 1, RNA template control (CO2) (similar results were obtained using RNA from cultures grown in air); lanes 2, cDNA template (CO2); lanes 3, cDNA template (air); lanes 4, DNA template PCR control.
