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. 2023 Feb;29(2):333–340. doi: 10.3201/eid2902.220725

Table. Results of gallery tests for Brucella isolates obtained from 2 patients with brucellosis, French Guiana, 2020.

Incubation time Test BRSO-2020-213 BRSO-2021-230
24 h
Reduction of nitrates to nitrites or nitrogen + +
Indole production
Fermentation of glucose
Arginine dihydrolase
Urease + +
Hydrolysis of esculin
Hydrolysis of gelatin
β-galactosidase production


48 h Glucose assimilation + +
Arabinose assimilation + +
Mannose assimilation + +
Mannitol assimilation - -
N-acetyl-glucosamine assimilation + +
Maltose assimilation
Potassium gluconate assimilation
Capric acid assimilation
Adipic acid assimilation
Malate assimilation
Trisodium citrate assimilation
Phenyl acetic acid assimilation
Cytochrome oxidase + +

*API20NE gallery tests (bioMérieux, https://www.biomerieux.com) were performed according to the manufacturer’s instructions. +, positive, –, negative.