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Sensitivity of recombinant protein ELISAs. The 80 serum samples previously characterized as being ASFV positive by immunoblotting (the OIE reference test) were analyzed by each recombinant protein ELISA. The ratios of the ODs obtained by each recombinant protein ELISA for the seropositive samples are shown. The dotted lines indicate the assay cutoff, which was established to be 3 for each recombinant protein ELISA. ID sera, serum sample number.
