To study the relationship,and the gene types among Yersinia pestis strains of Microtus type from different areas Random amplified polymorphism DNA (RAPD) were used.

• 目的了解不同地区田鼠型鼠疫耶尔森氏菌(以下简称鼠疫菌)之间的亲缘关系和基因类型。方法随机扩增多态性DNA(RAPD)技术。