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BALB/c mice immunized with plasmid pBCSSP4 and infected with T. cruzi did not develop myocarditis. BALB/c mice immunized with the plasmids pBCSSP4 (A), pBk-CMV (B), or injected with PBS (D) were infected with 104 BT. Control mice were non-immunized and non-infected (C). At 365 days post-infection, cardiac sections from corresponding mice were stained with hematoxylin and eosin. 40X magnification.
