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RT-PCR amplification of pcpB (lanes 2 and 3) and pcpD (lanes 4 and 5) fragments from RNA prepared from S. chlorophenolicum strain ATCC 39723 cells grown in the absence (lanes 2 and 4) or presence (lanes 3 and 5) of 100 μM PCP. Lanes 1 and 6 contain size markers.
