Figure 1. Pulsed-field gel electrophoresis of DNA from Burkholderia pseudomallei isolates digested with SpeI from patients with melioidosis in Taiwan. Lane M, bacteriophage λ DNA ladder (48.5 kb–970 kb). Lane 1, isolate from Kaohsiung County, 2005 (type A); lane 2, isolate from Tainan County, 2005 (type B); lane 3, isolate from northern Taiwan (type C); lane 4, isolate from northern Taiwan (type D). Values on the left are in kilobases.