血吸虫病和利什曼病在许多方面比较有所不同:(1)它是细胞外的大生物体;(2)血吸虫在终宿主体内有三个不同阶段,即新进入的血吸虫幼虫在皮肤和肺,成虫在肠系膜静脉,虫卵沉积在组织中,主要在肠道、肝、肺和尿道;(3)这些阶段在终宿主内不能复现。血吸虫病免疫机制的出现直接关系到血吸虫幼虫,幼虫在试管被感染动物抗血清损害。 Schistosomiasis and leishmaniasis differ in many ways: (1) it is a large extracellular organism; (2) schistosomes have three different stages within the final body, namely the newly introduced schistosome larvae in the skin and lung , Adult worms in the mesenteric vein, and eggs deposited in tissues, mainly in the gut, liver, lungs and urethra; (3) these stages are not reproducible in the terminal host. The occurrence of schistosomiasis immune mechanism is directly related to schistosome larvae, larvae in the test tube infected animal antisera damage.