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Trypanosoma rangeli are kinetoplastid protozoa which have been largely recognized and defined in several Latin American countries in relation to T. cruzi, because the two trypanosome species are frequently found in mixed infections in triatominae vectors, humans and a variety of wild and domestic mammals. We report the molecular characterization of 18 T. rangeli strains isolated from the salivary...
Cryptosporidium parvum has been shown, by molecular studies, to be heterogeneous in a manner linked to the host of isolation. However, no assessment of the degree of correlation between different typing systems or of the impact of geographical variation on the observed heterogeneity has been made. In this report we describe a new marker, based on point mutations in the sequence of the dihydrofolate...
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