title: Characterization of groups N and D streptococci isolated from rumen fluids.
abstract: Twelve strains of streptococci of serological groups N and D were isolated from rumen fluids of nine cows on four rations although both groups were not isolated from the same animal. The twelve were representative of a larger number of streptococci isolated by enrichment in milk. Generally, the physiological characteristics of the isolates indicated members of the lactic or enterococcus groups; however, several were atypical in one or more of the tolerance tests. Physiologically typical Streptococcus lactis but not S. cremoris, were isolated.
mesh_terms: D000818:Animals; D000942:Antigens, Bacterial; D002417:Cattle; D013293:Enterococcus faecalis / Q000276:immunology / Q000302:isolation & purification; D005260:Female; D005750:Gastric Juice / Q000382:microbiology; D013294:Lactococcus lactis / Q000276:immunology / Q000302:isolation & purification; D012417:Rumen / Q000382:microbiology*; D013045:Species Specificity; D013291:Streptococcus / Q000254:growth & development / Q000276:immunology / Q000302:isolation & purification*
chemical_list: D000942:Antigens, Bacterial