Transduction of Rifampin Resistance in Group A Streptococci

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Transduction of rifampin resistance in group A streptococci.

Rifampin-resistant strains of group A streptococci were isolated as spontaneous mutants. Transduction analyses employing phage A25 showed the rifampin marker to be transferred with high frequency. The mutations conferring resistance to rifampin and streptomycin are not co-transducible.

متن کامل

Transduction of bacteriocin determinants in group A streptococci

Determinants of streptococcin A-FF22 (SA) production and host cell immunity have been transduced to three serologically distinct Group A streptococci. Streptomycin resistance markers were not cotransducible with bacteriocin determinants. SA+ transductants of strains unrelated to the parent SA+ strain were unstable but SA+ transductants of a spontaneous SA- derivative of the parent appeared to b...

متن کامل

Role of macrophages in host resistance to group A streptococci.

Macrophages provide the first line of defense against invading pathogens. The aim of this study was to determine the role of macrophages during infection with group A streptococci (Streptococcus pyogenes) in mice. Here, we report that resident macrophages can efficiently take up and kill S. pyogenes during in vivo infection, as demonstrated by immunofluorescence and electron microscopy, as well...

متن کامل

Antibiotic resistance patterns of group B streptococci in pregnant women.

This study examined the antibiotic resistance patterns of group B streptococci (GBS) isolated from gravid women. A total of 156 vaginal and cervical isolates of GBS were examined for resistance to penicillin, ampicillin, clindamycin, cefoxitin, gentamicin, and erythromicin. No resistance to penicillin or ampicillin was found, nor was penicillinase production demonstrated. A high level of resist...

متن کامل

Intergroup Phage Reactions and Transduction between Group C and Group a Streptococci

In a study of intergroup reactions, four virulent Group A streptococcal phages were found to form plaques in high titer on lawns prepared from a number of Group C streptococcal strains. Whether the phages were propagated on the homologous (Group A) strain or a heterologous (Group C) strain did not appear to influence consistently the plaque-forming efficiency on lawns prepared from a homologous...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Journal of Bacteriology

سال: 1973

ISSN: 0021-9193,1098-5530

DOI: 10.1128/jb.115.2.709-710.1973