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Reactivities of sera from healthy individuals (squares), patients with Chagas' disease (circles), and patients with leishmaniasis (triangles) against recombinant TS by the TS ELISA. The results were calculated as the ratio of the absorbance of each serum sample at an optical density of 492 nm (A492) to the cutoff value. Values greater than 1.0 were considered reactive. The horizontal lines represent the arithmetic means.
