Fig. 6. Histopathological findings in the lungs, tonsils, and lymph nodes in different groups (H&E ×100). (A) G1, (B) G2, (C) 2dC, and (D) NC groups.
PCV2d, porcine circovirus type 2d; G1, Myco-X PCV2d challenge (Myco-X-vaccinated); G2, Myco-XD PCV2d challenge (Myco-XD-vaccinated); 2dC, PCV2d challenge control (unvaccinated challenged); NC, negative control (unvaccinated unchallenged).