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Relatedness of VISA and hVISA isolates and VRSA and VISA isolates deposited in the NARSA repository. Lanes: 1, VRS1 (first VRSA strain isolated in Michigan, 2002); 2, VRS3 (third VRSA strain isolated in New York, 2004); 3, VRS5 (fifth VRSA strain isolated in Michigan, 2005); 4, VRS2 (second VRSA strain isolated in Pennsylvania [Hershey Medical Center], 2002); 5, SA770 VISA; 6, SA1984 VISA; 7, SA 1287 VISA; 8, SA873 hVISA; 9, SA618 hVISA. M, molecular mass marker.
