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The life cycle of T. cruzi can begin with a wide variety of domestic (dogs, cats, pigs) and wild (rats and even bats, and marsupials) animals, which serve as reservoirs for infections. The trypomastigotes in the blood stream are slender, spindle-shaped forms, 15-20 m m in length having a nucleus, terminal kinetoplast, undulating membrane and a long flagellum. They are thicker than most other species, wellknown by their C-shape: C. The period is the kinetoplast. |