Serialis oncosphere

Fig. 8.22. Jejunal villi of ruminant and non-ruminant showing paths followed by oncospheres of Echinococcus granulosus and Taenia pisiformis (and some other Taenia spp.). The larger diameter of the E. granulosus oncosphere probably enables it to reach the lymphatic before being translocated in a venule. (Reprinted with permission from International Journal of Parasitology, 1, Heath, D. D., The migration of oncospheres of Taenia pisiformis, T. serialis and Echinococcus granulosus within the intermediate host, 1971, Pergamon Journals Ltd.)...

The following species of Taenia have been grown from oncospheres to active larvae with suckers T. hydatigena, T. ovis, T. pisiformis, T. serialis and E. granulosus (308, 314). The techniques of Heath Smyth (314), or modifications of them, have been used widely by other workers for the production and collection of E/S antigens of oncospheres in the preparation of potential vaccines (see Chapter 11, p. 302). Only limited success has been achieved with the culture of larval T. saginata (310, 471) and almost none with T. solium, and the in vitro culture of these important species remains a challenge. 

Heath, D. D. (1971). The migration of the oncospheres of Taenia pisiformis, T. serialis, and Echinococcus granulosus within the intermediate host. International Journal for Parasitology, 1 145-52. 

Heath, D. D. Smyth, J. D. (1970). In vitro culture of Echinococcus granulosus, Taenia hydatigena, T. ovis, T. pisiformis and T. serialis from oncosphere to cystic larva. Parasitology, 61 329-43. 

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