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Gel electrophoresis of PCR products from three B. burgdorferi sensu lato strains. The predicted lengths of the products were confirmed on a 1.5% agarose gel. A 100-bp ladder was used as a size marker (first lane). The other lanes show PCR products obtained from B. burgdorferi sensu stricto (B.b; lane 12), B. garinii (B.g; lane 13), and B. afzelii (B.a; lane 14) and a water control (neg; lane 15).
