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. 1994 Jul;32(7):1654-7.
doi: 10.1128/jcm.32.7.1654-1657.1994.

Biotypes of Arcanobacterium haemolyticum

P Carlson  1 , K Lounatmaa, S Kontiainen
Affiliations

Biotypes of Arcanobacterium haemolyticum

P Carlson et al. J Clin Microbiol. 1994 Jul.

Abstract

Colony morphology, beta hemolysis on horse blood agar, beta-glucuronidase activity, and ability to ferment sucrose and/or trehalose defined two biotypes of Arcanobacterium haemolyticum. One, the smooth type, grew as smooth, beta-hemolytic colonies and was beta-glucuronidase negative but often fermented sucrose and/or trehalose, while the other, the rough type, grew as rough colonies and was nonhemolytic, beta-glucuronidase positive, and negative for sucrose and trehalose fermentation. About 75% of the A. haemolyticum strains studied (n = 138) were of the smooth type. The smooth type predominated in wound infections, while the rough type was isolated almost exclusively from respiratory tract specimens; thus, 84% of the smooth-type strains were derived from wounds and 91% of the rough-type strains were isolated from respiratory tracts.

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