1. Evolution of extended-spectrum β-lactamases by mutation
M. Gniadkowski 
Clinical Microbiology and Infection 
Volume 14, Pages (January 2008)
DOI: /j x
Copyright © 2008 European Society of Clinical Infectious Diseases Terms and Conditions

2. Fig. 1
Tertiary structure of a class A β-lactamase with positions important for activity indicated. Reproduced with permission from Matagne et al., Biochem J 1998; 330: 581–598. © the Biochemical Society.
Clinical Microbiology and Infection  , 11-32DOI: ( /j x)
Copyright © 2008 European Society of Clinical Infectious Diseases Terms and Conditions

3. Fig. 2
Possible pathways of evolution of TEM-type extended-spectrum β-lactamases in Poland. Reproduced with permission from Baraniak et al., Antimicrob Agents Chemother 2005; 49: 1872–1880. © American Society for Microbiology.
Clinical Microbiology and Infection  , 11-32DOI: ( /j x)
Copyright © 2008 European Society of Clinical Infectious Diseases Terms and Conditions