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Antigenic properties of T. cruzi TR proteins. Newly identified TR proteins and previously characterized Leishmania-specific antigen rK39, T. cruzi-specific antigen CRA, and conserved antigen TcSMT were evaluated by ELISA for reactivity with sera from VL patients (n = 16), Chagas’ disease patients (n = 24), and healthy controls (n = 8). OD, optical density; ns, not significant; *, P < 0.05; **, P < 0.01; ***, P < 0.001; ****, P < 0.0001 (by either unpaired t test or Mann-Whitney test).
