PFGE <i>cpe</i> Southern blot analyses of <i>cpe</i>-positive type A, C, D and E isolates.

<p>(A) DNA from type A, C, D or E isolates was subjected to PFGE prior to Southern blotting and hybridization with a DIG-labeled, <i>cpe</i>-specific probe. (B) DNA from type A (F5603) or type C (CN2076, CN3748, CN3758, CN3763 and CN3753) isolates was subjected to PFGE prior to Southern blotting and hybridization with a DIG-labeled, <i>cpe</i>-specific probe. The migration of molecular size markers is indicated on the left of the blot.