Figure 2.

Agarose gel electrophoresis showing Hinf-I kDNA restriction profiles of T. cruzi isolated from patient 1 and populations recovered in vivo and in vitro. A) M-DNA marker: λ Hind II/ox Hae III, 1-kDNA profile I, 2-kDNA profile II, 3-kDNA profile III, 4–5-T. cruzi populations recovered after passage in immunosuppressed mice (kDNA profile II); B) enlarged photograph of kDNA minicircle regions showing the heterogeneity in fragments ranging from 600 to 1500 bp.