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A rapid slide test for the detection of Chagas' antibodies is described. It uses tanned human red cells coated with an aqueous extract of T. cruzi cultures. The sensitivity and specificity of this new method are compared to those of the classical hemagglutination reaction and the C fixation and are found to be just as adequate. The method can be used in any blood bank and requires no special skills or instruments.
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Knierim et al. (1970) studied this question.
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