绦虫幼虫通过对宿主炎症及免疫反应的逃避,以及营养物质的获得而在宿主中生存,宿主蛋白是幼虫氨基酸的来源。绦虫幼虫主动与宿主蛋白结合,这种宿主蛋白可在幼虫表面囊壁的似溶酶体囊内及囊液中见到。宿主免疫球蛋白可被囊蚴主动捕捉,并在囊液中缓慢降解,但主要在囊壁中进行。有人推测绦虫幼虫实际利用IgG作为主要的氨基酸来源。 Tapeworm larvae survive in the host by evasion of host inflammation and immune responses, as well as nutrient gain, the source of larval amino acids. Tapeworm larvae actively bind with the host protein, which can be seen in the lysosomal vesicles and cystic fluid on the surface of the larval wall. Host immunoglobulins can be actively captured by metacercariae and slow degradation in cystic fluid, but mainly in the cystic wall. It has been speculated that tapeworm larvae actually use IgG as the main source of amino acids.