1. Defining an extended-spectrum β-lactamase
D.M. Livermore 
Clinical Microbiology and Infection 
Volume 14, Pages 3-10 (January 2008)
DOI: /j x
Copyright © 2008 European Society of Clinical Infectious Diseases Terms and Conditions

2. Fig. 1
Structure of an oxyimino-aminothiazolyl cephalosporin. The C=N–OR group, shaded, is held rigid and shields the β-lactam ring from attack by classic β-lactamases, but not by extended-spectrum β-lactamases. Cefuroxime, cefotaxime, ceftriaxone, ceftazidime, cefepime and cefpirome are all designed on this scaffold.
Clinical Microbiology and Infection  , 3-10DOI: ( /j x)
Copyright © 2008 European Society of Clinical Infectious Diseases Terms and Conditions