2Franceschini N,Perilli M,Segatore B,et al.Ceftazidime and aztreonam resistance in Providencia stuartii: Characterization of a natural TEM-derived extended-spectrum beta-lactamase, TEM-60[].Antimicrobial Agents and Chemotherapy.1998
3Levesque M J.Cloning of SHV-2, OHIO-1, and OXA-6 β-lactamase[].Antimicrobial Agents and Chemotherapy.1990
4Naas T,Nordmann P.Analysis of a carbapenem hydrolysing class Aβ-lactamase from Enterobacter cloacae and of its Lys-R type regulatory protein[].Proceedings of the National Academy of Sciences of the United States of America.1994
5Knox J R.Extended spectrum and inhibitor resistant TEM-typeβlactamases: mutations, specificity, and three dimensional structure[].Antimicrobial Agents and Chemotherapy.1995
6Blahova J,Kralikova K,Krcmery V,et al.Extended-spectrum beta-lactamase producing strains of Enterobacter cloacae transferring resistance to cefotaxime and ceftazidime[].Journal of Chemotherapy.1999
7O′Callaohan C H,Morris A,Kirdy S M,et al.Novel method for detection of beta-lactamases by using a chromogenic cephalosporin substrate[].Antimicrobial Agents and Chemotherapy.1972
8Tai P C,Zyk N,Citri N.In situ detection ofβ-lactamases activity in sodium dodecyl sulfate-polyacrylamide gels[].Analytical Biochemistry.1985
