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透射电镜观察人五鞭毛滴虫前部有一椭圆形的细胞核，其背侧可见一条肋及由副基体和两根副基纤维组成的副基器。核的前方有由鞭毛周管、Ｃ形盾和６个毛基体组成的毛基体复合体。由毛基体分别发出４根前鞭毛，１根独立前鞭毛和１根后鞭毛。轴柱位于核的腹侧，分头、干和尾三部分。轴头起自盾－轴连合，开始是匙形，围绕于核的腹侧，延伸至核后端时，卷曲成筒状为轴干，最后以轴尾伸出体外。波动膜乃虫体细胞膜和细胞质向虫体背侧延伸形成的一条波浪形膜结构，向后直达虫体末端。该膜的细胞质内有一电子密度增大的板层结构。后鞭毛伴行于波动膜左侧，至虫体末端离开波动膜，游离于体外。
Transmission electron microscopy observed in front of human Trichomonas flammulina has an oval nucleus, the back can be seen by a rib and vice-substrate and two vice-sub-base fiber composition. In front of the nucleus there are flagellum peripheral tubes, C-shaped shields and 6 hair matrices, which consist of a hair matrix complex. Four pre-flagella, one pre-flagella and one post-flagella, respectively, are issued by the hair substrate. The shaft is located on the ventral side of the nucleus, split, dry and tail. Axis head from the shield - shaft joint, the beginning is a spoon-shaped, around the ventral side of the nucleus, extending to the nuclear back end, curled into a tubular shaft, and finally to the shaft extension. Wave membrane is the worm body cell membrane and cytoplasm to the body dorsal extending the formation of a wave-shaped membrane structure, the worm body directly back to the end. The cytoplasm of the membrane has an increased electron density in the lamellar structure. After the flagella along the left side of the wave to the worm to leave the end of the wave membrane, free in vitro.