title: Group Q streptococci. I. Ecology, serology, physiology, and relationship to established enterococci.
abstract: The group Q streptococci possess unique serological and physiological characteristics which differentiate them from established enterococci. The group Q antigen was not demonstrable in all strains; however, all possessed the group D antigen. All group Q strains were physiologically similar regardless of whether or not they possessed the group Q antigen. These strains differed from the established enterococcal species, as they neither hydrolyzed arginine nor initiated growth in 1.0% methylene blue-milk. They also differed radically in the fermentation of various carbohydrates, especially the polyhydric sugar alcohols. The results indicate that the group Q streptococci constitute a unique taxonomic entity; the species designation Streptococcus avium sp. n. is suggested, owing to their characteristic occurrence in chicken fecal specimens.
mesh_terms: D000818:Animals; D000941:Antigens / Q000032:analysis; D002417:Cattle; D004285:Dogs; D013293:Enterococcus faecalis / Q000378:metabolism; D005243:Feces / Q000382:microbiology; D006736:Horses; D006801:Humans; D011200:Poultry; D011233:Precipitin Tests; D011817:Rabbits; D012756:Sheep; D013291:Streptococcus / Q000276:immunology / Q000302:isolation & purification / Q000378:metabolism; D013552:Swine
chemical_list: D000941:Antigens