The group antigen of Group D streptococci is a glucose-substituted polymer of a-glycerophosphate (1, 2). In streptococcal extracts it is found in two forms, one, lipid-bound (lipoteichoic acid), the other, lipid-free (3). The two forms are often found together but in differing relative proportions depending on the source of the material and method of extraction. In phenol extracts from washed c...

Non-proliferating cells of Streptococcus faecalis var. liquefaciens required aspartic acid for proteinase biosynthesis in the absence of CO(2) but not in the presence of CO(2).

An investigation concerning external and midgut bacteria associated with cockroaches isolated from household and sewage was carried out. Blood agar medium was the most suitable medium for isolation of bacteria from household species. On the other hand, several types of media such as blood agar, Littman oxgall agar, brain heart infusion in addition to nutrient agar were good media for isolation ...

Hugh (1959) recently reported on motile enterococci isolated from human sources. He pointed out that motile strains in the genus Streptococcus are considered rare, and suggested that they have gone unrecognized simply because investigators have failed to examine for motility and flagella. Actually many strains of motile streptococci have been isolated and studied and the reader is referred to H...

The clinical features of 16 patients with Streptococcus faecalis endocarditis are reviewed and the currently favoured antimicrobial regimens for such infections are detailed.

Objective: To evaluate the anticariogenic effect of dandelion extract against different oral pathogenic clinical isolates. Methods: In the present study, we evaluated the antimicrobial effect of dandelion against oral pathogens by the minimum inhibitory concentration and minimum bactericidal concentration. Clinical isolates such as Enterococcus faecalis, Streptococcus mutans, Streptococcus sali...

Streptococcus faecalis strains harboring the conjugative plasmid pAD1 excrete a small peptide, iAD1, which inhibits the sex pheromone cAD1. Studies making use of the host strain Streptococcus faecium 9790, which normally does not excrete peptide pheromones, suggest that iAD1 may be determined directly by pAD1.

Streptococcus liquefaciens inoculated into orange concentrate. Appi. Microbiol., 3, 104-106. LARKIN, E. P., LITSKY, W., AND FULLER, J. E. 1955d Fecal streptococci in frozen foods. IV. Effect of sanitizing agents and blanching temperatures on Streptococcus faecalis. Appl. Microbiol., 3, 107-110. LEININGER, H. V. AND MCCLESKEY, C. S. 1953 Bacterial indicators of pollution in surface waters. Appl....

Streptococcus faecalis strains DS-5 and Streptococcus pyogenes strain AC-1 both have a 17 million dalton plasmid that determines resistance to erythromycin, lincomycin, and vernamycin B(alpha). The results of deoxyribonucleic acid-deoxyribonucleic acid hybridization experiments indicate that the two plasmids are about 95% homologous. It was also shown that erythromycin resistance is inducible i...