title: Endocarditis caused by a group B Streptococcus strain, type III, in a nonencapsulated phase.
abstract: A nontypeable blood isolate of group B streptococci (GBS) from a patient with endocarditis is suggested to be the nonencapsulated phase of a GBS strain, type III. From the original high-density isolate, a low-density, encapsulated phase was selected by Percoll gradient centrifugation. This phenomenon should be considered before a GBS strain is classified as truly nontypeable.
authors.affiliation: Department of Clinical Bacteriology, University of Umeå, Sweden.
authors.forename: M
authors.initials: M
authors.lastname: Sellin
authors.forename: M
authors.initials: M
authors.lastname: Linderholm
authors.forename: M
authors.initials: M
authors.lastname: Norgren
authors.forename: S
authors.initials: S
authors.lastname: Håkansson
mesh_terms: D000328:Adult; D016667:Bacterial Capsules / Q000276:immunology* / Q000502:physiology; D015373:Bacterial Typing Techniques; D004696:Endocarditis / Q000209:etiology / Q000382:microbiology*; D005260:Female; D006801:Humans; D016253:Microscopy, Immunoelectron; D013290:Streptococcal Infections / Q000175:diagnosis* / Q000276:immunology; D013292:Streptococcus agalactiae / Q000276:immunology / Q000302:isolation & purification*