Colonies on Mueller-Hinton agar or nutrient agar are slightly raised, yellowish green,
and glistening, have entire edges, and are about 1
-1.5 mm in diameter after 17 h of
incubation at 37 ºC in a humid atmosphere. Moderate hemolysis of horse blood agar
and rabbit blood agar. Aerobic. Grows at 35-37 ºC; less growth at 30 ºC. Growth
enhanced by 5
-8% CO2 at 30, 35, or 37 ºC. Slight or no growth at 22 and 42 ºC.
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Phylum Proteobacteria, Class Betaproteobacteria, Order Neisseriales, Family Neisseriaceae, Genus Neisseria, Neisseria macacae
Vedros et al. 1983.
Gram-negative cocci 0.6-1.0 μm in diameter, occuring singly or grouped in pairs with
adjacent sides flattened. Nonmotile. Endospores are not produced.
Isolated from the oropharynges of rhesus monkeys (Macaca mulatta).
Undetermined.
  1. Tone Tonjum, 2005. Order IV. Neisseriales ord. nov. In:  Bergey’s Manual of Systematic Bacteriology, Second edition, Vol two, part C
    The Alpha-, Beta-, Delta-, and Epsilonproteobacteria, George M. Garrity (Editor-in-Chief), pp 774-863.
  2. Vedros (N.A.), Hoke (C.) and Chun (P.): Neisseria macacae sp. nov., a new Neisseria species isolated from the oropharynges of
    rhesus monkeys (Macaca mulatta). Int. J. Syst. Bacteriol., 1983, 33, 515-520.
Positive results for carbonic anhydrase, catalase, DN-ase, iodine test (polysaccharide
synthesis from sucrose), nitrite reduction (with gas production), oxidase, acid
production from fructose, glucose, maltose & sucrose.

Negative results for nitrate reduction & tributyrin hydrolysis.
Neisseria macacae
(c) Costin Stoica
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