1. Amoxycillin/clavulanate resistance as related to β-lactamase content in Escherichia coli strains from community-acquired urinary tract infections in Greece 
Leonidas S. Tzouvelekis, Eva Tzelepi, Antonios Maniatis, Evangelos Vogiatzakis, Olga Paniara, Yiannis Tselentis, Nicholas J. Legakis 
Clinical Microbiology and Infection 
Volume 4, Issue 6, Pages (June 1998)
DOI: /j tb00066.x
Copyright © 1998 European Society of Clinical Infectious Diseases Terms and Conditions

2. Figure 1
Isoelectric focusing of β-lactamase preparations from the E. coli strains Ec-R1, Ec-R2 and Ec-R3 (lanes 2 to 4). Standard β-lactamases and their isoelectric points are in lanes 1 and 5.
Clinical Microbiology and Infection 1998 4, DOI: ( /j tb00066.x)
Copyright © 1998 European Society of Clinical Infectious Diseases Terms and Conditions