title: Biotypes of Arcanobacterium haemolyticum.
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.
authors.affiliation: Department of Medical Microbiology, Aurora Hospital, Helsinki, Finland.
authors.forename: P
authors.initials: P
authors.lastname: Carlson
authors.forename: K
authors.initials: K
authors.lastname: Lounatmaa
authors.forename: S
authors.initials: S
authors.lastname: Kontiainen
mesh_terms: D000191:Actinomycetaceae / Q000145:classification* / Q000166:cytology / Q000378:metabolism; D000328:Adult; D015373:Bacterial Typing Techniques; D006801:Humans; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged; D012141:Respiratory Tract Infections / Q000382:microbiology; D013045:Species Specificity; D014947:Wounds and Injuries / Q000382:microbiology