Figure 2. . NotI pulsed-field gel electrophoresis patterns of Yersinia pestis strains of biovar Medievalis obtained during plague outbreak in Libya, 2009. A) Pattern of three 2009 isolates from Libya. Lane M, low-range DNA marker (New England Biolabs, Ipswich, MA, USA); lane 1, IP1973; lane 2, IP1974; lane 3, IP1975. B) Comparison of the pattern of 1 isolate from Libya with those of other biovar Medievalis strains. Lane M, low-range DNA marker (New England Biolabs); lane 1, IP516 (Kurdistan); lane 2, IP519 (Kurdistan); lane 3, IP565 (Turkey); lane 4, IP1975 (Libya); lane 5, IP562 (Kurdistan); lane 6, IP564 (Kurdistan). Values on the left are in kilobases.