Figure 3.
PFGE patterns with dendrogram for Escherichia coli isolates. A genetic similarity index scale is shown above the dendrogram. Patient identification (Pt ID), sample site (Source), and number of days after admission to the intensive care unit that the strain was isolated (Day) are provided. Escherichia coli K-12 strain was used as the reference strain. For running conditions, see Patients, Materials, and Methods. BAL, bronchoalveolar lavage; SG, supragingival dental plaque; TS, tracheal secretion.