FIG. 1.
Example of closely related PFGE patterns representing isolates, with identical STs, obtained from a given farm. Panels (A) and (B) show PFGE patterns for isolates from farms 261 and 223, respectively. Red lines indicate bands missing in a given PFGE patterns (as compared with other PFGE patterns found among isolates from the same farm). PFGE, pulsed-field gel electrophoresis.