Bacillus

I have the following info on my unknown from lab. I know its a gram + bacillus, facultative, but I cannot nail down the species. I thought is might be B.cereus or B. mycoides? The fact the it is citrate - is throwing me off. Hope you can help! Thanks! glucose ...

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Firstly bacteria colonize our gastrointestinal tract which contains more than 400 different bacteria. In science, bacteria like Escherichia coli or Bacillus subtilis are model organisms (with E. coli being the best studied organism in the world). Therefore E. coli has been extensively used for many ...

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Why are performing a bunch of test in no particular order? Don't you have a scheme? And why are you missing important information - is it coccus or bacillus? You also say that it is weekly catalase positive. I would redo the test (you sure that your culture is pure?) because your bacteria is indole ...

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... to figuring it out. Here are the results of all the tests I performed. Colony morphology Circular, Raised, smooth, glistening Cell morphology Rod, Bacillus (single) Gram stain Pink, Gram - Osmotic sensitivity Up to 20% NaCl Temperature tolerance 4˚ – 37˚ - Mesophile Acidity/alkalinity Prefers Alkaline/neutral ...

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I think sample B might be Bacillus as this produces B haemolysis, although it isn't motile. I think you need further testing to identify them for sure. Btw I assumed they are rods as you said they are motile, sure about that? You haven't ...

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