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blaGES, blaOXA-1

blaGES is a Class A extended-spectrum beta-lactamase or sometimes a carbapenemase (depending on variant), found in Pseudomonas and certain Enterobacterales. blaOXA-1 is a Class D beta-lactamase that confers resistance to penicillins. Both contribute to multidrug resistance in gram-negative infections.

Detection of these genes in molecular susceptibility testing helps guide antibiotic selection. Sample type is typically a culture isolate or direct clinical specimen.

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