Comparison of PFGE patterns of major M. kansasii groups seen in France, the United States, and Japan, with AseI digestion. Lanes: 1 to 3, French isolates (W47, C5, and W45) with major pattern Ia (13); 4 to 6, isolates in the United States (M. kansasii 88, 223, and 224) with major pattern Da; 7 to 9, Japanese isolates (65190, 95265, and 95315) of major group with VspI pattern M (6); 10, ATCC 35775; 11, ATCC 12478; 12, lambda DNA standard.