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Comparative analysis between the diagnostic performances of B1t and B2t recombinant proteins in IgG ELISA with a panel of defined sera. (a) The number of positive and negative (+/−) sera against B1t or B2t antigen. (b) ROC curves used to determine AUC and cutoff values for the B1t and B2t antigens. (c) The calculated AUCs ± standard errors (se), confidence intervals (CI), cutoffs, sensitivity, and specificity for each antigen are shown.
