What is the morphology of Neisseria?

Structure. Neisseria species are Gram-negative cocci, 0.6 to 1.0 μm in diameter. The organisms are usually seen in pairs with the adjacent sides flattened. Pili, hairlike filamentous appendages extend several micrometers from the cell surface and have a role in adherence.

What shape is Neisseria meningitidis bacteria?

meningitidis are gram-negative, coffee-bean shaped diplococci that may occur intracellularly or extracellularly in PMN leukocytes. N. meningitidis is a fastidious organism, which grows best at 35-37°C with ~5% CO2 (or in a candle-jar).

What is the shape of Neisseria Subflava?

cocci
Morphology: “Kidney bean” or “coffee bean” shaped cocci. Occurring singly, but more often in pairs with adjacent sides flattened.

Where is Neisseria Lactamica found?

upper respiratory tract
Neisseria lactamica is a common and normally harmless commensal of the upper respiratory tract found especially in young children. In the July 2006 edition of this journal, Zavascki and colleagues reported the first case of N. lactamica causing cavitatory lung disease in an adult organ transplant recipient (3).

What is Neisseria gonorrhoeae morphology?

Morphology of Neisseria gonorrhoeae: Under the microscope, it appears as a gram-negative coccus which is present in pairs (diplococci) with the flattening of the adjacent sides. The diplococci have kidney/coffee bean shape. It is a non-spore forming bacteria and is able to move using twitching motility.

Is Neisseria motile or nonmotile?

Neisseria gonorrhoeae is an aerobic gram-negative, non-spore forming, non-motile, encapsulated, and non-acid-fast bacteria, which appear in kidney bean shape under the microscope.

Is Neisseria a Coccu or bacilli?

The members of the genus Neisseria are typically gram-negative cocci. The bacteria appear in pairs (diplococci). Diplococci have flattened opposing sides, imparting the characteristic kidney or coffee-bean appearance seen in stained smears.

What are the characteristics of Neisseria?

Neisseria spp. are a Gram-negative non-spore-forming diplococcus that has a flattened shape; its size ranges between 0.6–0.8 μm. They are oxidase-positive, non-acid-fast cocci or plump rods. They can reach a diameter of around 0.6–0.8 μm and sometimes up to 1.0 × 2.0–3.0 μm.

Does Neisseria Lactamica have endospores?

A. The members of genus Neisseria, which belongs to the family Neisseriaceae, are Gram-negative diplococci with adjacent sides flattened. Since the bacteria divide in two planes, tetrads can also be observed. Single bacteria range from 0.6 to 1.5 μm in size, are nonmotile, and do not produce endospores.

What color is Neisseria Subflava?

Neisseria subflava is a common inhabitant found in the human upper respiratory tract. It is a gram-negative diplococcus. It produces a positive result of blue when put through the oxidase test.

What does Neisseria Lactamica cause?

lactamica causes septic arthritis, as there are case reports of septic arthritis, discitis, or bursitis caused by other commensal Neisseria spp., including N. sicca, N. subflava, and N. mucosa.

Is Neisseria Lactamica aerobic or anaerobic?

Neisseria are typically considered as aerobic organisms but have since been shown in both N. meningitidis and N.