A strain of Aeromonas hydrophila isolated from bile was oxidase positive only when grown on nonselective media. The isolate was oxidase negative when grown on gram-negative selective and/or differential media. It is proposed that oxidase tests on gram-negative rods be performed on colonies grown on nonselective media to assure valid results.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC274543 | PMC |
| http://dx.doi.org/10.1128/jcm.5.1.112-113.1977 | DOI Listing |
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