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目的：研究带绦虫在精子发生过程中的精子变形。方法：透射电镜。结果：３２个玫瑰花样的次级精母细胞经第２次减数分裂后，产生６４个精细原形体（６４－ｓｐｅｒｍａｔｉｄ－ｐｌａｓｍｏｄｉｕｍ）。精细胞的变形过程复杂，首先见精细胞胞质和核伸长，胞质增多由胞质桥“ｃｙｔｏｐｈｏｒｅ”相连；然后是核的进一步伸长，核染色质聚合成线束状，最后脱离胞质桥，形成成熟精子。成熟的精子呈细线状，长约１６．２－１８．６μｍ，宽０．３５－０．４５μｍ，可分为有核的头部及无核的尾部两部分。头部长约５－６μｍ，占体长的１／３，有一个较长的核缠绕着轴丝，无线粒体。尾部长约１１．２－１６．６μｍ。在尾部的前段及头部的后方，纵断面上见一些线粒体包绕着轴丝，全长约１．６－１．７μｍ。精子的尾部只含一条结构为“９＋１”的轴丝。精子横断面，质膜下见４６条微管（周围微管）。结论：带绦虫精子的变形是一个非常复杂的过程。
Objective: To study the sperm deformation of tapeworms during spermatogenesis. Methods: Transmission electron microscopy. RESULTS: Sixty-two spermatid-plasmodium cells were produced after the second meiosis of the second rose-like secondary spermatocytes. The deformation process of sperm cells is complex, first see the sperm cell cytoplasm and nuclear elongation, cytoplasm increased by the cytoplasmic bridge “cytophore” connected; and then the nuclear elongation, nuclear chromatin polymerization into a bundle, and finally from the cytoplasm Bridge, the formation of mature sperm. Mature sperm showed fine line shape, about 16.2-18.6μm, width 0.35-0.45μm, can be divided into nuclear head and non-nuclear tail two parts. Head length of about 5-6μm, accounting for 1/3 of the body length, there is a long core around the spindle wire, no mitochondria. Tail length of about 11.2-16.6μm. In the anterior and posterior of the tail, there are some mitochondria wrapped around the axial filament in the longitudinal section. The total length is about 1.6-1.7μm. The tail of the sperm contains only one axis of the structure of “9 +1”. Sperm cross-section, see 46 under the plasma membrane microtubules (around the microtubules). Conclusion: The deformation of tapeworm sperm is a very complex process.