１材料与方法 病原材料来源于鼠疫监测队收集的３只自毙灰尾免。常规消毒后取样（肝、脾、骨髓）进行鼠疫细菌学检验。 培养基采用上海市医学化验所试剂厂生产的营养琼脂，批号９９０１０１，加自制牛肉汤。 噬菌体采用青海地方病防治研究所生产，批号２０００－１。 培养条件 1 Materials and Methods Pathogenic materials from the plague monitoring team collected three since the death of gray tail-free. After routine disinfection sampling (liver, spleen, bone marrow) for plague bacteriology. Culture medium used by the Shanghai Institute of Medicine reagent nutrient agar production, batch number 990101, plus homemade beef soup. Phage Qinghai Institute of endemic disease prevention and treatment of production, batch number 2000-1. Culture conditions