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Gram-negative bacteria

Gram-negative bacteria

(Science: microbiology) bacteria which lose crystal violet stain but are stained pink when treated by grams method.


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Help! "Unknown Bacteria" I have no idea where to look =T

Hi, I have been having a hard time figuring out my unknown 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 ...

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by stephanie1234
Mon Dec 03, 2012 4:44 am
 
Forum: Microbiology
Topic: Help! "Unknown Bacteria" I have no idea where to look =T
Replies: 1
Views: 523

How to create a science project about acne?

... be really hard to test acne the way you are thinking. When you culture bacteria from skin, you have to use several, let's call them dichotomous keys, to determine what kind of bacteria you are looking at. Gram stain is the first step, but then cell shape, cluster patterns, etc all ...

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by tmbirkhead
Sun Sep 23, 2012 5:25 am
 
Forum: Human Biology
Topic: How to create a science project about acne?
Replies: 2
Views: 849

Growth on metal pot?!

... specific pathogens rather than numbers (some foods carry milions of bacteria per gram) and such pathogens are well characterized and documented. I refer you to the US FDA "Bad ...

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by JorgeLobo
Sun Jun 10, 2012 5:37 pm
 
Forum: Microbiology
Topic: Growth on metal pot?!
Replies: 24
Views: 4278

Help Identifying Unknown Bacteria

RESULTS: Gram Positve bacilli Typtophan Degradation - Casein Hydrolysis + Startch Hydrolysis + Fat Hydrolysis - Oxidase - Catalase + Urease - Citrate + Voges-Proskauer - Mehyl Red + Litmus Milk - Acid Fermentation Glucose = yellow(acidic), ...

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by Kat000
Sun Apr 01, 2012 10:56 pm
 
Forum: Microbiology
Topic: Help Identifying Unknown Bacteria
Replies: 0
Views: 481

Re: Bacteriophages and Acne?

Propionibacteria are Gram postive - so no classic endotoxin (LPS) tho' debris could still be a concern. But assuming topical application, ...

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by JorgeLobo
Sun Apr 01, 2012 8:59 pm
 
Forum: Microbiology
Topic: Bacteriophages and Acne?
Replies: 9
Views: 8257
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