【摘要】 [目的 ]　对 12株粪肠球菌的DNA分子进行基因分析。　 [方法 ]　用SmaI作为内切酶 ,将粪肠球菌的DNA分子切割成若干片段 ,用Amersham pharmaciabiotech公司生产的GENENAVIGATOR —脉冲凝胶电泳系统将这些片段以垂直泳道的形式分离开来。　 [结果 ]　经分析比较 ,这 12株粪肠球菌经SmaI切割后的DNA片段排列均不相同。　[结论 ]　这 12株粪肠球菌在流行病学上来源不同。更多还原

【Abstract】 To analyze the DNA molecules of 12 strains of enterococcus faecalis. Cut DNA molecules of enterococcus faecalis to several fragments using Smal as restriction enzyme. Use the GENE NAVIGATOR SYSTEM - PULSED FIELD GEL ELECTROPHORESIS produced by Amersham pharmacia biotech to run the gel and to separate these DNA fragments with straight-lane. After analyzing and comparing we found the arrangement of DNA fragments of these 12 strains were different from each other. [Conclusion] These 12 E.faecalis strains had different origins in epidemiology.更多还原