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The microscopic lesions of liver sections in necropsied rabbits. (A) Liver tissues from rabbits with slight lymphocytic venous periphlebitis in the nb53 group. (B) Severe lymphocytic venous periphlebitis in hepatocytes in virus only or nb anti-PCV2 groups. (C) No obvious pathological signs of microscopic lesions in the rabbits of the nb14 and 1B5 groups.
