Fig. 11

Histologic sections of lungs from calves receiving 10¹⁰ (a), 10¹¹ (b), 10¹² (c, d) and CFU-equivalents of Escherichia coli and Staphylococcus aureus lysate. There are neutrophils and macrophages in alveoli (a), fibrin (b) or eosinophilic fluid (c) in alveoli (asterisks), thickened hypercellular alveolar septa (c), and hyaline membranes (d, arrows) indicating diffuse alveolar damage