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已证明对肝片吸虫的保护性免疫是片吸虫成熟后产生的。本文报告感染肝片吸虫的大鼠在第2次感染后24～48小时虫负荷是否减少。将雄鼠分为6个实验大组,每大组包括攻击组(第1次加第2次感染)和攻击对照组(仅进行第2次感染),两组鼠令相同,第1次感染全部用30～35天鼠令,喂以10～15个后囊蚴,分别同隔7～11周再进行第2次攻击,感染250～300个后囊蚴,于攻击后24～48小时解剖动物检查虫体。
Protective immunity against Fasciola hepatica has been shown to be produced after the schistosome has matured. This article reports whether the burden of worms in rats infected with Fasciola hepatica decreased 24 to 48 hours after the second infection. The male rats were divided into six experimental groups, each group including the attack group (the first plus the second infection) and the challenge control group (only the second infection), the two mice make the same, all the first infection With 30 to 35 days of rats, fed with 10 to 15 posterior metacercariae, were separated from the interval of 7 to 11 weeks and then the second attack, infected with 250 to 300 metaplasia larvae, 24 to 48 hours after challenge dissected animals Check the worm.