Mohamed H A, Molyneux D H
Parasitology. 1984 Dec;89 ( Pt 3):407-15. doi: 10.1017/s0031182000056651.
The rediscovery of Elleipsisoma thomsoni Franca 1912 from Talpa europaea is reported. This organism, whose identity as a parasite was initially doubted, is shown to be an intra-erythrocytic protozoan parasite. Light microscope observation confirmed the original description and 22/53 (42.5%) moles examined from a locality near Blackpool were positive. Organ impression smears demonstrated that E. thomsoni was concentrated in the heart and lungs, occasionally in the kidneys, liver and spleen. Electron microscope studies conclusively showed that the parasite was a member of the phylum Apicomplexa. A typical apical complex was present with rhoptries, micronemes, polar ring and microtubules but, in contrast to the genera Plasmodium, Babesia and Theileria, a conoid was also present. The parasitized red cells were larger than normal mature erythrocytes and the remaining cytoplasm of the erythrocyte was less dense than that of non-infected red cells. The problem of studying this enigmatic parasite and its life-cycle are described.
报道了从欧洲鼹鼠（Talpa europaea）中重新发现1912年的汤姆森埃氏孢子虫（Elleipsisoma thomsoni Franca）。这种生物最初被怀疑其寄生虫身份，现被证明是一种红细胞内原生动物寄生虫。光学显微镜观察证实了最初的描述，从布莱克浦附近一个地方检查的53只鼹鼠中有22只（42.5%）呈阳性。器官印片显示汤姆森埃氏孢子虫集中在心脏和肺部，偶尔也出现在肾脏、肝脏和脾脏中。电子显微镜研究最终表明该寄生虫是顶复门的一员。存在典型的顶端复合体，包括棒状体、微线体、极环和微管，但与疟原虫属、巴贝斯虫属和泰勒虫属不同的是，还存在一个类锥体。被寄生的红细胞比正常成熟红细胞大，红细胞剩余的细胞质比未感染红细胞的细胞质密度小。描述了研究这种神秘寄生虫及其生命周期的问题。
