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فنوتیپی
Molecular methods based on characterization of the bacterial DNA have a con- siderably higher discriminatory power than the above-mentioned phenotypic meth- ods.
Thus far, however, advances in molecular techniques have not yet replaced the traditional phenotypic methods for epide- miological characterization of Salmonella, and the combined use of phenotypic and genotypic typing methods allowing for a detailed comparison of strains of
The microbial subtyping approach involves characterization of pathogen isolates by phenotypic and/or genotypic subtyping methods as described in the Microbiology section above.
The phenotypic typing methods currently applied to Salmonella isolates included in source attribution studies have limitations in their power to identify the origin of a given isolate, particularly for commonly occurring subtypes.
, MLVA and MLST) have a considerably higher discriminatory power than the phenotypic methods and are increasingly being applied in outbreak investigation for pinpointing a particu- lar source [59].
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