Figure 7

Abundant A. fumigatus hyphae in lung tissue of group A. (A1. Hematoxylin and eosin staining, ×10; A2. Hematoxylin and eosin staining, ×40; B1. Periodic acid–Schiff staining, ×10; B2. Periodic acid–Schiff staining, ×40; C1. Methenamine silver staining, ×10; C2. Methenamine silver staining, ×40).