Andere Kunden interessierten sich auch für
![Pathogenic hemolytic bacteria]( "Pathogenic hemolytic bacteria")
Pathogenic hemolytic bacteria23,99 €![Bacterial and Viral Infections]( "Bacterial and Viral Infections")
Bacterial and Viral Infections29,99 €![Biosafety of handling with some pathogenic bacteria]( "Biosafety of handling with some pathogenic bacteria")
Biosafety of handling with some pathogenic bacteria16,99 €![Pathogenicity and Antibiotic Resistance: Two Sides of the Same Coin]( "Pathogenicity and Antibiotic Resistance: Two Sides of the Same Coin")
Pathogenicity and Antibiotic Resistance: Two Sides of the Same Coin23,99 €![Bacterial Virulence]( "Bacterial Virulence")
Bacterial Virulence88,99 €![Bacterial Molecular Networks]( "Bacterial Molecular Networks")
Bacterial Molecular Networks122,99 €![Bacterial Molecular Networks]( "Bacterial Molecular Networks")
Bacterial Molecular Networks147,99 €
Virulence genes of pathogenic bacteria, which code for toxins, adhesins, invasins or other virulence factors, may be located on transmissible genetic elements such as transposons, plasmids or bacteriophages. In addition, such genes may be part of particular regions on the bacterial chromosome, termed 'pathogenicity islands' (PAIs). Pathogenicity islands are found in Gram-negative as well as in Gram-positive bacteria. They are present in the genome of pathogenic strains of a given species but absent or only rarely present in those of non-pathogenic variants of the same or related species. They comprise large DNA regions (up to 200 kb of DNA) and often carry more than one virulence gene, the G+C contents of which often differ from those of the remaining bacterial genome. In most cases, PAIs are flanked by specific DNA sequences, such as direct repeats or insertion sequence (IS) elements. In addition, PAIs of certain bacteria (e.g. uropathogenic Escherichia coli, Yersinia spp., Helico- bacfer pylori) have the tendency to delete with high frequencies or may undergo duplication and amplifications.