1. Sequence microdiversity at the ribosomal RNA operons of Escherichia coli pyelonephritogenic strains 
A.I. Anton, A.J. Martinez-Murcia, F. Rodriguez-Volera, F. Dalet 
Clinical Microbiology and Infection 
Volume 7, Issue 7, Pages (July 2001)
DOI: /j x x
Copyright © 2001 European Society of Clinical Infectious Diseases Terms and Conditions

2. Figure 1
Agarose electrophoresis of PCR-RFLP 16S–23S spacers of different pyelonephritogenic E. coli strains, digested with RsaI (up) and TaqI (down). Strains numbered 1, 5 and 9 belong to the α1 subgroup (see text), strains 4, 6, 7 and 8 to α2, and strains 2 and 3 to β2 (1–9). M =1-kb ladder (Gibco BRL) molecular marker (75–10180 bp).
Clinical Microbiology and Infection 2001 7, DOI: ( /j x x)
Copyright © 2001 European Society of Clinical Infectious Diseases Terms and Conditions