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PCR products of cyrI and cyrJ genes displayed on a 1% agarose gel. Lane 1, DNA marker. Lanes 2 to 5 represent the amplification products of cyrI (lanes 2 and 3) and cyrJ (lanes 4 and 5) from pure RNA extracts, and lanes 6 to 9 represent the amplification products of cyrI (lanes 6 and 7) and cyrJ (lanes 8 and 9) from total cDNA, shown in each case as negative and positive controls, respectively.
