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Graphic comparison of different pFra plasmids with pG8786 derived by using the Artemis Comparison Tool program (The Wellcome Trust Sanger Institute, Cambridge, United Kingdom). (a) pG8786 and pMT-1 of Y. pestis KIM10+; (b) pG8786 and pMT1 of Y. pestis CO92; (c) pG8786 and pMT1 of Y. pestis KIM5; (d) pG8786 and pMT1 of Y. pestis 91001. Areas of pG8786 that are not present in the other pFra plasmids are labeled region 1 and region 2. Vertical lines indicate similar parts of the plasmids.
