IS6110- and (CGG)5-probed DNA fingerprinting patterns of M. tuberculosis clinical isolates from Japan and Poland and the respective corresponding dendrograms. The fingerprint patterns are ordered by similarity. The corresponding dendrograms are to the left of the patterns. The position of each IS6110 (A) or (CGG)5 (B) band is normalized so that the patterns for all strains are comparable. The scale depicts the similarity of patterns calculated as described in Materials and Methods. In IS6110-probed DNA fingerprint patterns, five clusters showing a similarity of more than 44% were designated clusters Ia, IIa, IIIa, IVa, and Va. Isolates with five or less than five copies are indicated in panel A. In (CGG)5-probed DNA fingerprint patterns, four clusters showing a similarity of more than 70% were designated clusters Ib, IIb, IIIb, and IVb. The isolates are named according to their origin as IMCJ (Japan) or P (Poland); the suffix R indicates drug resistance For example, IMCJ 627 R is a Japan-derived drug-resistant isolate.