Deoxyribonuclease activity of micrococci from clinical sources.
نویسندگان
چکیده
منابع مشابه
Routine separation of staphylococci from micrococci based on bacteriolytic activity production.
A new method is described by which separation of staphylococci from micrococci can be achieved in routine laboratory use. The basis of this method is that bacteriolytic activity is produced by staphylococci but not by micrococci.
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Forty-nine strains of coagulase-negative staphylococci and 26 strains of micrococci isolated from human eyes were classified by the Baird-Parker system of 1966. The staphylococci belonged to subgroups II, III, IV, and V with one strain each in subgroups III and IV. However, when biotyped by Baird-Parker's system of 1974, less than 50% (23/49) of strains were typable and they belonged to biotype...
متن کاملModified oxidase and benzidine tests for separation of staphylococci from micrococci.
Two simple and rapid methods for the separation of staphylococci from micrococci are described. They are based on modified oxidase and benzidine tests. Micrococci and Staphylococcus sciuri yield a blue color with a 6% solution of tetramethylphenylenediamine in dimethyl sulfoxide, whereas all of the other staphylococci exhibit no coloration. Best's results were obtained with overnight cultures o...
متن کاملDifferentiation of Staphylococcus and Micrococcus spp. with the Taxo A bacitracin disk.
Taxo A bacitracin disks (BBL Microbiology Systems, Cockeysville, Md.) were evaluated as a test for differentiating staphylococci from micrococci in clinical laboratories. All staphylococci tested were resistant to the disks, with no zone of growth inhibition. Zones of growth inhibition ranging from 10.5 to 25.0 mm in diameter were observed with all micrococci except two isolates which failed to...
متن کاملUrinary infection with coagulase-negative staphylococci in a teaching hospital.
In the eight-month period of study of all urine samples processed in our routine laboratory, only 85 out of 12 152 specimens yielded a bacteriologically significant growth of either Staphylococcus epidermidis or micrococci. Their growth on MacConkey medium was strictly comparable to that on cysteine lactose electrolyte-deficient (CLED) media. Most micrococci isolated were from urine samples of ...
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عنوان ژورنال:
- Journal of bacteriology
دوره 73 6 شماره
صفحات -
تاریخ انتشار 1957