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Mercurial resistance. E. coli XL1-Blue cells with pMRD141 (◊), pMRD141 and pMEV89 (⧫), and pBluescript II SK+ (▵) with mercuric chloride (A) and phenylmercuric acetate (B) were grown at 37°C. After 16 h of incubation, the diameter of the inhibition zone (minus the 6.5-mm disk diameter) on petri dishes was measured. All values are the means of triplicate experiments.
