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Reverse transcription-PCR of the Pht cluster of P. syringae pv. phaseolicola NPS3121. (A) Each amplification result is shown and labeled with the amplicon name. Also, each amplicon obtained is illustrated graphically as bars above the Pht cluster. (B) Detail of the analysis of the desI-phtN region. Negative results are shown for clarity as empty boxes or empty bars. The small numbers under the result boxes represent the temperature at which expression was assayed.
