母牛口蹄疫的糜烂性病变

Erosive lesions of foot-and-mouth disease on the dental pad and tongue of a cow. Vesicles have ruptured, and the overlying epidermis has sloughed off. Hyperemia and hemorrhage in the underlying tissue follows. This is a contact animal on day 10 after experimental exposure. The sharp demarcation of the edges of the vesicle on the dental pad is indicative of recent rupture. This is a fresh lesion highly suitable for sample collection.