LAP3 and infection: Our results demonstrated that TvLEGU-2 protein is expressed and is present during infection, as the peptidase was detected in the secretions of Tv (+) patients (Figure 9C) and is recognized by the immune systems of patients infected with T. vaginalis: anti-TvLEGU-2 antibodies were detected in the sera of Tv (+) patients (Figure 9A).