Figure. Repetitive sequence-based PCR fingerprint patterns of nontuberculous mycobacteria isolates from patients and household plumbing. Lane 1, 100-bp ladder; lane 2, no DNA control; lane 3, patient Mycobacterium avium isolate ML-P-1; lane 4, patient ML household M. avium shower water isolate ML-W-6–2; lane 5, patient ML household M. avium bathtub tap water isolate ML-W-8–3; lane 6, no sample; lane 7, patient M. avium isolate SC-P-3; lane 8, SC patient household M. avium water isolate SC-W-1-1; lane 9, no sample; lane 10, patient M. avium isolate TC-P-1; lane 11, TC household M. avium humidifier water isolate TC-W-4–1; lane 12, TC household M. avium bathroom tap water isolate, TC-W-2–2.