title: Genetic studies on reference strains of mutans streptococci.
abstract: Twenty four reference strains (serotype a-h) belonging to the mutans group of streptococci were compared for DNA fragment patterns of rDNA after treatment with Hind III. It was shown that Streptococcus cricetus (serotype a), S. rattus (serotype b), and S. downei (serotype h) reveals comparatively homogeneous patterns while S. mutans (serotype c, e and f) exhibits differences between the different serotypes as well as within single serotypes. S. sobrinus had an intermediary diversity. These data support the previous findings that S. mutans is heterogeneous at the serological, biochemical and genetical level.
authors.affiliation: Department of Food Microbiology, The University of Tokushima, 18-15, 3-chome, Kuramoto-cho, Tokushima 770-8503, Japan. ota@nutr.med.tokushima-u.ac.jp
authors.forename: Fusao
authors.initials: F
authors.lastname: Ota
authors.forename: Masayuki
authors.initials: M
authors.lastname: Yamato
authors.forename: Mie
authors.initials: M
authors.lastname: Hayashi
authors.forename: Masayuki
authors.initials: M
authors.lastname: Ota
authors.forename: Tetsuro
authors.initials: T
authors.lastname: Koga
authors.forename: Ahmed
authors.initials: A
authors.lastname: Sherin
authors.forename: Chiharu
authors.initials: C
authors.lastname: Mukai
authors.forename: Kentaro
authors.initials: K
authors.lastname: Sakai
authors.forename: Shigeru
authors.initials: S
authors.lastname: Yamamoto
mesh_terms: D000818:Animals; D012150:Polymorphism, Restriction Fragment Length; D051381:Rats; D021521:Ribotyping; D012703:Serotyping; D013291:Streptococcus / Q000145:classification / Q000235:genetics; D013295:Streptococcus mutans / Q000145:classification / Q000235:genetics*