The researchers conducted experiments with rhesus monkeys, some of which had an acute infection with the Schistosoma mansoni parasitic worm and some of which were parasite-free, normal and healthy.

• 研究人员用恒河猴进行实验，用曼氏血吸虫寄生造成其中一些猴子急性感染，另外一些未受感染正常而健康。