Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Agarose gel electrophoresis of DNA fragments obtained by multiplex PCR with primers specific for stx1 (140 bp) and stx2 (584 bp) (A) and with primers specific for ehly (340 bp) (B) performed with genomic extracts from different E. coli strains: EDL 933, stx1-, stx2-, and ehly-positive O157:H7 reference strain; CH011, CH013, CH014, CH015, CH016, and CH017, isolates from patients 1 through 6, respectively. M.W., 1-kb ladder of molecular size markers (Boehringer Mannheim).
