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  • Title: Rapid identification of Branhamella catarrhalis with 4-methylumbelliferyl butyrate.
    Author: Vaneechoutte M, Verschraegen G, Claeys G, Flamen P.
    Journal: J Clin Microbiol; 1988 Jun; 26(6):1227-8. PubMed ID: 3133392.
    Abstract:
    Branhamella catarrhalis can be distinguished from Neisseria spp. by the presence of butyrate esterase. This enzyme can be rapidly detected when 4-methylumbelliferyl butyrate is used as the substrate. All B. catarrhalis strains tested gave a positive fluorescence reaction within 5 min, while Neisseria spp. remained negative, even after 18 h of incubation.
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