| 摘要 |
There is disclosed an antigenic peptide that comprises at least 15 amino aci ds having the sequence Ala Glu Pro Lys X Ala Glu Pro Lys X Ala Glu Pro Lys X, wherein X is Pro or Ser. This peptide is useful in an ELISA assay to detect antibodies specific to T. cruzi infection and Chagas disease. This peptide is further useful in a vaccine composition for immunizing an individual to preveht Chagas disease upon exposure to T. cruzi.
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