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SmaI-digested chromosomal DNA of vancomycin-susceptible and vancomycin-resistant E. faecalis isolates classified as clonal type B, as determined by PFGE. Lanes 1, 3, 4, 5, and 6, subtype B; lanes 7 and 12, subtype B1; lane 11, subtype B1′; lanes 9 and 10, subtype B2; lane 8, subtype B3; lane 13, subtype B3′; lane 14, subtype B4; lanes 15 and 16, subtype B5.
