Molecular phylogenetic analysis by Maximum Likelihood method. The phylogram depicting the phylogenetic relationships among the 27 T. cruzi DNA sequences corresponding to eight rodents, based on Miniexon intergenic gene sequencing. The un-rooted tree with the highest -lnL = 890.6637 is shown, allowing identification of the three different clusters corresponding to three different DTUs in the rodent tissue samples analyzed. Bootstrap values appear on each clustering branch. The last letter in the sample name refers to H: heart, M: skeletal muscle, L: liver, S: spleen. *indicates mice with mixed infections.