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. 2022 Mar 14;10(3):611. doi: 10.3390/microorganisms10030611

Figure 1.

Figure 1

Phenotypic methods of AMPc beta-lactamase detection (Available online: https://mast-group.com/uk/products/amr/antibiotic-resistance-detection-sets/d68c/ (accessed on 25 October 2021)). Mast Disk test, with four disks [123]: Disk A(Cefpodoxime), disk B (Cefpodoxime + ESBL inhibitor), disk C (Cefpodoxime + AmpC inhibitor), disk D (Cefpodoxime + AmpC inhibitor + ESBL inhibitor). (A): positive result for AmpC production alongside ESBL production; (B): positive result for AmpC production; (C): positive result for ESBL production; (D): no AmpC or ESBL production. Image (E) depicts the AmpC E-test with cefotetan (CN) and cefotetan with cloxacillin (CNI), showing a positive result for the presence of AmpC beta-lactamase with a major reduction in MIC at the CNI end [124].