Strep

... does not ferment mannitol. 5) catalase positive because it produces o2. 6) coagulase negative. if your unknown organism is from the genus streptococcus (strep) then: 1) under the microscope you would generally observe: gram positive (blue/purple ) cocci chains (because strep divide in ...

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I'd not look for characteristic colony morphology on PEA. Colonies of Strep pnuemo are fairly distinctive on sheep blood agar - alpha hemolytic and forming a flat colony with a central depression.

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... like on it?? For example, should the colonies be tiny, circular, convex, irregular, what color if any....?? :arrow: Does this sound accurate for Strep pneumoniae. This is what I got for my PEA agar: -colony morphology for PEA= tiny,pinpoint,circular/convex, irregular, and smooth colonies on the ...

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How should Streptococcus pneumoniae supposed to look like on PEA (phenylethyl alcohol agar) and I want to know how the colonies should appear like on blood agar. (example- are they round, small, pinpoint, irregular, etc??) **I ...

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... negatives are more sensitive (lower MIC) so it's a matter of differential not absolute inhibition. It's used more for the isolation of staph than strep as staph is less inhibited. Though strep pheumo should grow, there are little to no data on mitis and the context in which one finds these bacteria ...

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