Gram

... (a few 10's of times in the literature) although it is reported that illegitimate recombinations are more frequent in this bacteria than other gram-negative bacteria. We had been able to generate a single mutant using this method before, but we're having trouble deleting a gene within the same ...

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... bacteria. I honestly thought all of my test results added up to Staphylococcus Aureus, but my oxidase test read positive. My results were: 1. Gram- + 2. Morph- Coccus, cluster 3. Lactose fermentation- acid, yellow + 4. Gelatin hydrolysis- - 5. Starch Hydrolysis- - 6. Catalase- + 7. Oxidase- ...

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... Rowe for information on this topic.) Results: Presumptive Test Confirmed Test Completed Test Sample Location Gas EMB Agar – Lactose Fermentation Gram Reaction Lactose Fermentation + - + - + Gram negative rods - + - Spring + - Pipe + + + + Ditch + - Stream + + + + Pond + + + + Ditch Pipe Pond ...

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I've been working on my unknown in Microbiology and I'm actually stuck now. I've done gram staining and have determined that my bacteria is gram neg, med rods. However, the tests I've done are coming back negative with two being somewhat quesitonable. Lactose +/+ Glucose ...

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You might try Bergey's 7th, 8th or 9th edition manual and there you should see the lisitngs of the various bacteria and their results..Hope this helps! 8)

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