we have isolated a T. cruzi antigen which could be useful for differential diagnosis of
Chagas' disease from leishmaniasis. This antigen, a 52-kD protein, reacted with all sera
from Chagas1 disease patients tested but not with sera from patients with leishmania, in
ELISA. The 52-kD antigen is widely distributed in the Trypanosoma genus since the 163B6
monoclonal antibody reacts with T. rangeli and 8 strains and a clone of T. cruzi …