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IS6110 DNA fingerprints of M. tuberculosis strains isolated from the Philippines. Most strains showed similar patterns because of the common 4.4-, 2.8-, 2.3-, and 2.0-kb fragments. Strains containing a 6.6-kb fragment by IS6110 fingerprinting were classified as type J. Lane 1, M. tuberculosis H37Rv. Numbers on the left are in kilobases.
