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胎儿弯曲菌蛟河株从结肠癌患者血液中的分离及鉴定

World Chinese Journal of Digestology(2010)

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Abstract
目的:研究从结肠癌术后患者血液中分离出的病原菌生物学性状并鉴定其种型.方法:按常规的鉴定方法进行细茵学实验(包括形态学、培养特性、生化特征等实验);用碱裂解法提取细菌DNA,使用TaKaRa 16S rDNA Bacterial Identification PCR Kit(Code No.D310),以Forward primer/Reverse primer 2为引物,做16S rDNAPCR扩增及序列测定.结果:蛟河株的形态学、培养特性和生化特征等实验符合弯曲菌属胎儿弯曲菌(Campylobacter fetus)鉴定标准:经16S rDNA扩增及测序结果NCBI上比对结果为胎儿弯曲菌.结论:蛟河株为弯曲菌属胎儿弯曲菌;但比对胎儿亚种形态学和生化特征有一定差异,且可稳定遗传给子代,可以确定为胎儿亚种的新变种.
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Key words
Pathogenicity,Jiao he strain,Colon cancer,Campylobacter fetus
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