title: Serological identification of Streptococcus salivarius subsp. thermophilus.
abstract: Streptococcus salivarius subsp. thermophilus (Str. thermophilus) has no group-specific antigen. HCl extracts of 551 strains of streptococci isolated from cheese or yogurt (123 Str. thermophilus and 428 Enterococcus faecalis - Ent. faecium spp.) were examined with three type-specific antisera prepared against representatives of Str. thermophilus and also with Lancefield group D antisera. All typical (80) or atypical (43) strains of Str. thermophilus reacted with at least one type-specific antiserum and none of the enterococci reacted. Only two strains reacted with both type-specific and group antisera.
authors.affiliation: Faculty of Agriculture, Al-Azhar University, Cairo, Egypt.
authors.forename: M A
authors.initials: MA
authors.lastname: Nour
authors.forename: G
authors.initials: G
authors.lastname: Abdel-Tawab
authors.forename: S
authors.initials: S
authors.lastname: Shalaby
authors.forename: O A
authors.initials: OA
authors.lastname: Mohamed
mesh_terms: D000818:Animals; D000942:Antigens, Bacterial / Q000032:analysis*; D002611:Cheese; D013293:Enterococcus faecalis / Q000276:immunology / Q000302:isolation & purification*; D005516:Food Microbiology; D007106:Immune Sera / Q000276:immunology; D011817:Rabbits; D013291:Streptococcus / Q000276:immunology / Q000302:isolation & purification*; D015014:Yogurt
chemical_list: D000942:Antigens, Bacterial; D007106:Immune Sera