RT Journal Article SR Electronic(1) A1 Bouvet, A. A1 Grimont, F. A1 Grimont, P. A. D.YR 1991 T1 Intraspecies Variations in Nutritionally Variant Streptococci: rRNA Gene Restriction Patterns of Streptococcus defectivus and Streptococcus adjacens JF International Journal of Systematic and Evolutionary Microbiology, VO 41 IS 4 SP 483 OP 486 DO https://doi.org/10.1099/00207713-41-4-483 PB Microbiology Society, SN 1466-5034, AB The rRNA gene restriction patterns of two species of nutritionally variant streptococci, Streptococcus defectivus and Streptococcus adjacens, were determined, and the results were compared with the electrophoretic migration profiles of penicillin-binding proteins. Reference strains belonging to various streptococcal species were used as controls. Our results correlated with the results of DNA-DNA hybridization experiments and confirmed the delineation of these two species. Moreover, they demonstrated that intraspecies variations occur and suggested that there are two subspecies of S. defectivus., UL https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/00207713-41-4-483