Fecal Streptococci. II. Quantification of Streptococci in Feces

Fecal Streptococci in Water'

ROSE, ROBERT E. (Massachusetts Department of Public Health, Amherst), AND WARREN LITSKY. Enrichment procedure for use with the membrane filter for isolation and enumeration of fecal streptococci in water. Appl. Microbiol. 13:106-108. 1965.-By the use of PYC enrichment medium, the recovery of fecal streptococci from river water has been increased more than twofold over that of M-Enterococcus Aga...

Fluorogenic selective and differential medium for isolation of fecal streptococci.

Of 44 fluorogenic substrates tested for their ability to differentiate species of fecal streptococci, four yielded species-differentiating reactions. The remaining substrates either yielded uniformly positive, negative, or variable strain-dependent reactions. One substrate, 4-methylumbelliferone-alpha-D-galactoside, was hydrolyzed by Streptococcus bovis and S. faecium and its biotypes. 4-Methyl...

Nontransformable Streptococci on the Transformation of Streptococci

PERRY, DENNIS (Northwestern University Medical School, Chicago, Ill.), AND HUTTON D. SLADE. Effects of filtrates from transformable and nontransformable streptococci on the transformation of streptococci. J. Bacteriol. 91:2216-2222. 1966.-The nature of the transformation competence factor from a group H streptococcus was investigated. The activity of competence factor reached a maximum at the t...

Streptococci

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Studies on Hemolytic Streptococci: II. Streptococcus pyogenes.