Fig. 7. Content changes in SIgA in the ileum after PCV2 infection. ELISA analysis demonstrated that SIgA protein reacts with a biotinylated anti-SIgA antibody in the PCV2 group. The uninfected group was used as a negative control.

PCV2, porcine circovirus type 2; dpi, days post-infection; SIgA, secretory immunoglobulin A.

^*p < 0.05.