宁夏阿拉善黄鼠鼠疫菌毒力特性实验报告

Experimental report on some virulents of yersinia pestis citellus alashanicus

对宁夏黄鼠疫源地不同年代不同宿主分离的鼠疫菌毒力,F_1抗原含量,pst1,lcr 反应及 pgm表型进行测定,发现60年代分离的菌株与70年代分离的菌侏,毒力存在着明显的差异,60年代菌株毒力强,流行范围广,lcr 反应及 pgm 因子表型不同。pgm^+株经黄鼠传递15代,仍保持原有特性,而 pgm^-经15代传递有不同程度的改变,三次流行鼠疫菌株 F_1抗原含量基本相同,该疫源地菌株对三种试验动物敏感性相似。

Four virulences,F_1 antigen content,pst_1,lcr reaction and pgm of yersinia pestic plague were deter- mined.The results showed that there was significant difference about virulences of strains separated be- tween in the 1960s and in the 1970s.The pgm^+ strains after 15 generations did not change,but pgm^- strains after 15 generations did.