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...
Tag: Gram Negative Cocci
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...
Neisseria gonorrhoeae, the gonococcus, is a gram-negative diplococcus that causes the sexually transmitted disease, gonorrhea. Gonorrhea commonly manifests as cervicitis, urethritis, and...
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...
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...
Neisseria gonorrhoeae and Neisseria meningitidis are Gram-negative diplococci (kidney bean-shaped) with flattened sides. They are characteristically found inside polymorphonuclear leucocytes....
