The diagnostic utility of the AmpC beta-lactamase inhibitors LN-2-128, 48-1220, and Syn 2190 in combination with cefotetan (CTT) or cefoxitin in a disk test for the detection of clinical isolates of Klebsiella spp. producing plasmid-mediated AmpC beta-lactamases (pAmpCs) was evaluated. The combination of Syn 2190 and CTT had a sensitivity of 91%, a specificity of 100%, and a reproducibility of 100% and showed the best potential of using an inhibitor for detection of Klebsiella spp. producing pAmpCs.
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Black et al. (2005) studied this question.
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