1,721,032 research outputs found
Resistenza spontanea in vitro agli antibiotici glicopeptidici in diverse specie stafilococciche.
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In vitro activity of the ketolide HMR 3647 against erithromycin-susceptible and erithromycin-resistant isolates of Streptococcus pyogenes.
No full textDifferent approaches to resistance phenotype determination in erithromycin-resistant strains of Streptococcus pneumoniae.
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Additional differentiating characters of the two subspecies of Staphylococcus hyicus
No full textForty-five strains of Staphylococcus hyicus subsp. hyicus and 36 strains of S. hyicus subsp. chromogenes were examined for bacteriolytic activity with the same assay system previously used in taxonomic studies on staphylococci. The two subspecies differed from each other chiefly in that for optimal lytic activity S. hyicus subsp. hyicus strains required a higher salt concentration in the test medium than S. hyicus subsp. chromogenes strains. The lack of lytic activity on B15TP1 medium was a major difference between S. hyicus and S. aureus, and the lack of activity on TP2P medium was a major difference between S. hyicus and S. intermedius. Penicillin-binding proteins (PBPs) were studied in 40 S. hyicus strains. The S. hyicus subsp. hyicus strains had only one PBP (mol. wt 79 000) while the S. hyicus subsp. chromogenes strains had three distinct PBPs (mol. wts 84 000, 82 000 and 79 000)
Different staphylococcal species contain various numbers of penicillin-binding proteins ranging from four (Staphylococcus aureus) to only one (Staphylococcus hyicus)
No full textThe penicillin-binding proteins of a total of 25 staphylococcal strains belonging to five different species were analyzed. All strains of the same species showed an identical penicillin-binding protein pattern which clearly differed from that of strains of the other species. Staphylococcus aureus, Staphylococcus intermedius, Staphylococcus simulans, and the dolphin strains were found to contain two to four penicillin-binding proteins. Strains of Staphylococcus hyicus exhibited only one penicillin-binding protein
In vitro transfer of vancomycin resistance from enterococci to different Listeria species.
No full textCaratterizzazione di фm46.1, un elemento genetico che veicola tet(O) e mef(A) in Streptococcus pyogenes.
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