Fig. 4From: Construction of an HRP-streptavidin bound antigen and its application in an ELISA for porcine circovirus 2 antibodiesMean PCV2 specific serum antibody titers of the nine naturally infected with PCV2. Standard deviations are indicated by the error bars. The S/P cutoffs of the HBDS-ELISA, DS-ELISA and Indirect ELISA were 0.2, 0.27 and 0.35, respectivelyBack to article page