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Parasitemia curves and survival index in acutely T. cruzi-infected C57BL/6, BALB/c, A/J, and C3H/HePAS mice. Mice were infected with 1,000 blood forms of T. cruzi, and the parasitemias were screened by microscopic observation of 5-μl blood aliquots at different time points after infection. In panel A, results represent the mean ± SD of parasitemia levels (n = 5). In panel B, results represent the survival index (n = 5). A representative experiment (out of three experiments) is shown.
