母胞蚴

渗透压、pH值对日本血吸虫毛蚴体外转变成母胞蚴的影响

Effects of Osmolarity and pH on the Transformation of Schistosoma japonicum Miracidium to Mother Sporocyst in vitro

40天的母胞蚴布满肠壁周围，胚球两端拉长；

At 40 days postinfection , mother sporocyst scattered all over the intestine wall .

分别拍摄共培养1h、12h、24h及3d毛蚴生长照片。将培养3d的母胞蚴注射于阴性钉螺头足部，80d后观察钉螺逸蚴情况。

The pictures of miracidia were recorded after co-cultivation for 1 h , 12 h , 24 h and 3 d. The co-cultivated for 3 days mother sporocysts injected in the head and foot of negative snails , after 80 days , observed whether cercariae could be obtained or not .

螺宿主对吸虫幼虫期的血细胞反应主要是在毛蚴入侵早期以及子胞蚴逸离母胞蚴的早期，表明螺宿主血细胞反应可能具有对幼虫发育期的特异性。

We found that the larval parasites were surrounded by blood cells of the snails especially on early stages of mother sporocyst and daughter sporocyst but not for conspicuous encapsulation reaction , which suggest that the reaction may be stage specific to development of larval trematode .