Figure 4. Antibody responses against peptide 121 in pigs.
Pig sera collected at the date of inoculation and 6 weeks post-inoculation of KLH-conjugated peptides 15 and 121 or PBS were examined by ELISA for their ability to bind to peptide 121 antigen as described in details in materials and methods section. The horizontal broken line represents the OD cut-off value. Background-corrected OD values above this line are seropositive for peptide antigen. The data presented in this figure are representative of three independent experiments, each assayed in duplicate.