Fig. 4From: A nanobody‐horseradish peroxidase fusion protein‐based competitive ELISA for rapid detection of antibodies against porcine circovirus type 2Optimize the reacting conditions of the developed cELISA. a Determination of the optimal dilution for serum samples to be tested. b Determination of the incubation time of antigen-antibody reaction. c Determination of the colorimetric reaction timeBack to article page