FIG. 2.

RFLP Southern blot analysis of NruI-digested DNA from North American human GI disease isolates. Southern blots were probed with a 639-bp DIG-labeled cpe-specific probe. Control isolates shown include 10239 (NCTC10239; a chromosomal cpe, food poisoning isolate) and F4969 (a plasmid cpe, non-food-borne human GI disease isolate). Representative North American human GI disease isolates shown include food poisoning isolates 537-5 and 538-1 and AAD isolates T34058 and W30554. Molecular sizes of DNA markers are given to the left of the blot.