پاورپوینت کتاب مبانی در میکروبیولوژی (مبانی میکروب شناسی)نویسنده Kathleen Park Talaro and Barry Chess Foundations in Microbiology Sixth Edition 245اسلاید به زبان اصلی(انگلیسی) همراه باتصاویر General Characteristics of the Staphylococci •Common inhabitant of the skin and mucous membranes •Spherical cells arranged in irregular clusters •Gram-positive •Lack spores and flagella •May have capsules •45 species Staphylococcus aureus •Grows in large, round, opaque colonies •Optimum temperature of 37 o C •Facultative anaerobe •Withstands high salt, extremes in pH, and high temperatures •Carried in nasopharynx and skin •Produces many virulence factors Virulence factors of S. aureus Enzymes : •Coagulase – coagulates plasma and blood; produced by 97% of human isolates; diagnostic •Hyaluronidase &nda ...