7、Salmonellaisanimportant pathogenthat cancause humanand animaldiseases.The epidemiologicalsurvey demonstratesthatSalmonellapathogenicityislandsare associated with humansalmonellosisdiseases.Virulenceassociated geneswere found thathave much effecton controla
8、nd prevention ofthe disease forfurther understanding the development ofbacterialdiseases.PCR(Polymerase ChainReation)served asbasic technique inthispaper which primer sequenceswere based on specific gene sequ