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Agrobacterium isolates from intravenous catheters of three hospitalized patients were initially identified as A. tumefaciens, but inability to produce 3-ketolactose revealed that two of them were A. vitis. However, rDNA analysis correlated all of the isolates to A. tumefaciens. Pulsed-field gel electrophoresis analysis ascertained the nosocomial transmission of the infection.
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Pignato et al. (2004) studied this question.
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