体外培养的血吸虫成虫正常与否,一般是以虫的活动力、交配行为和产卵特征作为鉴别标准的,但这些不足以代表真实的形态学、生理学和生物化学的情况。本文应用电子显微镜观察了虫体细胞超微结构的变化。雌虫体外培养4～6天后,卵巢细胞的部分线粒体伸长,末端膨胀,部分则呈圆圈状。核糖体极少与内质网相连。卵黄细胞发生进 Schistosoma japonicum adults cultured in vitro is normal or not, usually worm activity, mating behavior and oviposition characteristics as a standard, but these are not enough to represent the true morphology, physiology and biochemistry. In this paper, electron microscopy was used to observe the ultrastructure of parasites. After 4 to 6 days of in vitro culture, some mitochondria of ovary cells are elongated and the end is swollen, some of them are in a circle. Ribosomes are rarely linked to the endoplasmic reticulum. Yolk cells into the