Escherichia fergusonii Associated with Pneumonia in a Beef Cow

Figure 1

Histological appearance of the affected lung tissue, fibrinous bronchopneumonia with large alveolar necrotic areas filled with neutrophils and debris. Interlobular septa are markedly expanded with fibrin, edema, and lesser numbers of neutrophils. Hematoxylin and eosin, 4x, bar = 200 μm.