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n. a genus of parasitic protozoans that move by means of a long trailing flagellum and a thin wavy membrane, which project from the body surface. Trypanosomes undergo part of their development in the blood of a vertebrate host. The remaining stages occur in invertebrate hosts, which then transmit the parasites back to the vertebrates. T. rhodesiense and T. gambiense, which are transmitted through the bite of tsetse flies, cause sleeping sickness in Africa. T. cruzi, carried by reduviid bugs, causes Chagas’ disease in South America.

Subjects: Science and Mathematics — Medicine and Health.

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