Figure 1.
L. intracellularis-specific IgA and IgG in serum. Sera were collected at the time points indicated from L. intracellularis-inoculated pigs and IgA and IgG was measured by ELISA (diluted 1:12.5 and 1:50, respectively). Values from individual pigs in group RE, TC, and CC are expressed as OD% of positive control sera of individual animals. Arrows indicate inoculation with L. intracellularis at day 0 and at day 49.