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观察东方田鼠血清被动转移小白鼠抗血吸虫感染的保护性.方法用东方田鼠混合新鲜血清,分别经尾静脉与肌注转给小鼠,在感染血吸虫尾蚴后第42天解剖,检测小鼠保护效果.结果实验1的血吸虫虫荷明显低于对照组(P“,”Aim To observe the acquired protective immunity for mice against S.jaPonicum infection after passively transferring M.fortis sera.Methods We transferred mixed fresh sera from M.fortis to mice veand miracidium hatching rate of eggs in test group 1 was lowered by 81. 54% and 50. 67%,respectively,and thoseinfection with S. jaPonicum cercaria after passively transferred with M.fortis sera,and as far as the ways of passive transfer were concerned,the effect of venous injection was prior than that of musculaf injection.