Figure 1.

Dendrogram showing the Simple Matching Coefficient (SM) of similarity based on isoenzymatic profiles of the T. cruzi strains from Chagas disease/HIV co-infection patients and comparison with other different T. cruzi strains. Patient 1; B-T. cruzi isolated from a chronic chagasic patient, Y-prototype of Z2b (Y strain), CL-prototype of Z2 (CL strain), E-T. cruzi isolated from vector, Dm28c and Colombian strains-prototypes of Z1, Patient 2.