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. 2020 Sep;20(3):1090–1108. doi: 10.4314/ahs.v20i3.11

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© 2020 Aruhomukama D.

Licensee African Health Sciences. This is an Open Access article distributed under the terms of the Creative commons Attribution License (https://creativecommons.org/licenses/BY/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 7 — Flow chart for detection of AmpC beta-lactamase production in Enterobacteriaceae. Superscript letters: a, this category includes Enterobacteriaceae spp. with no known chromosomal AmpC production plus E. coli; b, differences of zone diameters indicated as “inconclusive” means there were no visible inhibition zones around both cefoxitin discs with or without cloxacillin (pampC, plasmidic AmpC beta-lactamase); c, this category refers to mutations in the AmpC promoter region of E. coli that result in the overexpression of AmpC. Adapted from the Journal of Clinical Microbiology (vol. 49.8 (2011): 2798–2803), by Polsfuss, Silke, et al., 2011. Copyright 2011 by the Journal of Clinical Microbiology.