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9 Cards in this Set
- Front
- Back
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N. Gonorrhoeae |
Usually gram-neg cocci or rods in pairs, shaped like coffee beans, nonmotile, do NOT form spores, capnophilic |
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N. Gonorrhoeae is a fastidious big where will it grow best? |
CHOC. Agar Thayer Martin, Martin Lewis |
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N. Gonorrhoeae appearance |
Intracellular GNDC, small, tan, translucent, and raised, gummy and rubbery |
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N. Gonorrhoeae diagnostics |
Oxidase (+), catalase (+), uses glucose ( fermenter) may produce beta- lactamase |
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N. elongata is an exception for what? |
Catalase test: its the only catalase negative in the Neisseria spp. |
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Neisseria meningitidis |
Gram-negative, flat colonies, smooth, gray to white on CHOC. SBA increased CO2 bluish gray |
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Diagnostics of N. Meningitidis |
Catalase +, oxidase +, maltose +, glucose +, Dnase -, nitrate -, BAP |
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Disadvantage of nucleic acid assay |
Nonamplified probe test are only marginally more sensitive than cervical cultural Not approved for pharyngeal or rectal specimens Don't allow for recovery of an organism to be used for susceptibility testing |
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What strains are virulence factors in N. meningitidis? |
Encapsulated strains A, B, C, Y, W- 135 |
