Fig. 1From: Construction of an HRP-streptavidin bound antigen and its application in an ELISA for porcine circovirus 2 antibodiesHsb-Ag (shown in gray) and its binding to antibody. SBP is fused to antigen by a linker. The recombinant antigen is able to bind to HRP labeled streptavidin (SA) with high affinity and retention of reactionogenicity. In this report, the antigen and specific antibody are Cap∆41 and PCV2 antibody, respectivelyBack to article page