While many organisms in the family are mammalian commensals or part of the normal diplococci ), and typically do not have flagella.
2.
Gram-negative, diplococci were present in the smear, narrowing the organism down to a " Neisseria " species.
3.
"S . pneumoniae " can be differentiated from the viridans streptococci, some of which are also lancet-shaped diplococci.
4.
In 1884, with Angel Celli, he first observed Gram-negative diplococci in the cerebrospinal fluid of a fatal case of meningitis in 1884.
5.
The diagnosis is suspected, when Gram-negative diplococci are seen on Gram stain of a centrifuged sample of CSF; sometimes they are located inside white blood cells.
6.
"Neisseria " species are Gram-negative bacteria included among the proteobacteria, a large group of Gram-negative forms . " Neisseria " diplococci resemble coffee beans when viewed microscopically.
7.
It is named after the Swiss rods, coccobacilli, or as in the case of " Moraxella catarrhalis ", diplococci in morphology, with asaccharolytic, oxidase-positive, and catalase-positive properties . " M . catarrhalis " is the clinically most important species under this genus.
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