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Pulsed-field gel of total DNAs of B. hermsii, B. parkeri, and B. burgdorferi. The large plasmids of B. hermsii and B. parkeri are indicated by arrows and the 54-kb linear plasmid of B. burgdorferi by an arrowhead. Asterisks indicate the linear chromosomes of all species. The sizes (in kb) of selected Saccharomyces cerevisiae chromosomes and lambda DNA concatemers are shown on the left and right, respectively.
