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Pulsed-field gel electrophoresis of Clostridium difficile isolates recovered from beef cattle entering feedlots. Pulsed-field gel electrophoresis of Clostridium difficile isolates recovered from beef cattle entering feedlots. Figure 1 legend: Lanes 1, 8 and 15 contain a PFGE ladder (50-1000 kb). Lane 3 has an unrelated sample and lanes 6 and 14 are empty. The remaining lanes show NAP7 C. difficile.
