Figure 3. Pulsed-field gel electrophoresis of linezolid-resistant enterococci (LRE) isolates, hospital A, Tennessee. A) Digestion with ApaI. B) Digestion with SmaI. Isolates labeled A, B, C, and D refer to patients mentioned in the text. Blood, isolate from blood specimen culture; Rect, isolate from perirectal/rectal swab specimen culture; Env, environmental isolate; H9812, S. Braenderup H9812 strain (ATCC BAA-664) (27) used as size marker.