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Figure 5.


Lymph node, pig, inoculated with porcine circovirus type 2 (PCV2) 140 days previously. Immunohistochemical staining using a polyclonal antiserum against PCV2 revealing scant brown staining in the cytoplasm of macrophages-like cells in the center of lymphoid follicles. Streptavidin-biotin-peroxidase complex method counterstained with hematoxylin. Bar = 40 μm. (A color version of this figure is available at:

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