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Tag: Gram Negative Cocci

link to Moraxella catarrhalis: Properties, Lab Diagnosis

Moraxella catarrhalis: Properties, Lab Diagnosis

Moraxella catarrhalis is a small gram-negative diplococcus that resembles the cocci of the genus Neisseria. The genus Moraxella is one of the several in the family Neisseriaceae; other medically...

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link to Neisseria meningitidis: Properties, Pathogenesis, Lab Diagnosis

Neisseria meningitidis: Properties, Pathogenesis, Lab Diagnosis

Neisseria meningitidis (Nm), also referred to as meningococci are fastidious, aerobic Gram-negative diplococci with adjacent sides flattened (lens-shape/half-moon-shaped). It is a commensal of the...

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link to Neisseria gonorrhoeae (gonococcus) Virulence Factors

Neisseria gonorrhoeae (gonococcus) Virulence Factors

Neisseria gonorrhoeae, the gonococcus, is a gram-negative diplococcus that causes the sexually transmitted disease, gonorrhea. Gonorrhea commonly manifests as cervicitis, urethritis, and...

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link to Modified Thayer-Martin Agar: Preparation, Uses

Modified Thayer-Martin Agar: Preparation, Uses

Thayer-Martin agar is a selective medium used for the isolation of gonococci (Neisseria gonorrheae) from specimens containing a mixed flora of bacteria and/or fungi e.g. urogenital specimen. Modified...

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link to Gram-Negative Cocci and Coccobacilli of Medical Significance

Gram-Negative Cocci and Coccobacilli of Medical Significance

The most common gram-negative cocci of medical importance belong to the family Neisseriaceae which includes the genera Neisseria, Moraxella, Kingella, Acinetobacter, etc.  Gram Negative Cocci...

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Neisseria gonorrhoeae vs. Neisseria meningitidis

Neisseria gonorrhoeae and Neisseria meningitidis are Gram-negative diplococci (kidney bean-shaped) with flattened sides.  They are characteristically found inside polymorphonuclear leucocytes....

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