【摘要】 目的　对从我国不同类型疫源地分离的鼠疫菌进行色素沉着因子 (Pgm )表型的分析。方法　用氯化血红素培养基或刚果红培养基培养鼠疫菌 ,对不同颜色的菌落进行计数 ,计算鼠疫菌Pgm的阳性率。 结果　我国 10个疫源地的 16个生态型和新发现的四川青海田鼠型 ,除昆仑山A、B型外 ,其他各型的菌株均含有Pgm+ 菌 ,以青海田鼠型、锡林郭勒高原型、北天山东段型、北天山西段A型、北天山西段B型菌株的Pgm+ 率为高 ,Pgm+ 菌株 >90 %。结论　青海田鼠型、锡林郭勒高原型、北天山东段型、北天山西段A型、北天山西段B型菌株的Pgm+ 表型稳定。更多还原

【Abstract】 Objective To learn about the difference on the composition of Pgm+ and Pgm- cell of Yersinia pestis.Methods Using Jackson-burrow’s medium and Congo red medium,we examined the numbers of Pgm+ and Pgm- cell of 311 Yersinia pestis from various natural foci in China. Results The Pgm+ rate of Y.pestis in Microtus fuscus.Xilinguole plateau,Northern on east and west of mountain Tianshan ecotypes were the highest.There were Pgm+ cells in every Y.pestis except A and B ecotype in Kunlun mountain. Conclusion The Pgm+ phenotype of Y.pestis in Microtus fuscus,Xilinguole plateau,Northern on east and west of mountain Tianshan ecotypes were very stable.更多还原