title: [Properties of the R plasmids of Sh. flexneri strains isolated in Bulgaria].
abstract: The study of 3,237 Sh. flexneri strains isolated in Bulgaria revealed that 50.72% of them were resistant to antibiotics. 95.88% of the antibiotic-resistant strains were found to have R factor of incompatibility groups F, I or N. The plasmids of incompatibility group F had the property fin+, and the plasmids of groups I and N had the property fin-. R plasmids were divided into 4 groups by their ability for phage restriction.
mesh_terms: D002031:Bulgaria; D003227:Conjugation, Genetic; D004352:Drug Resistance, Microbial; D005827:Genetics, Microbial; D010957:Plasmids; D011815:R Factors; D012703:Serotyping; D012763:Shigella flexneri / Q000235:genetics* / Q000276:immunology / Q000302:isolation & purification
vernacular_title: Svoĭstva R-plazmid shtammov Sh. flexneri, vydelennykh v Bolgarii.