Figure 4

Immunohistochemical findings associated with histopathologic diagnoses of canine parvoviral enteritis. There is positive immunoreactivity to antigens of CPV-2 within the mucosa glands (A), dilated crypts (B), and the muscular (closed arrows) and serosal layers (open arrows) of the small intestine (C), as well as in areas of discrete myocarditis (D). Observe positive immunoreactivity of CDV antigens in areas of villous fusion (E,F) and dilated crypts (G) of the small intestine. (A–G) Immunoperoxidase; Bar, (A–C), (F,G) 50 µm; (E) 200 µm.