Figure 7From: A case of penicillium marneffei infection involving the main tracheal structure The pathological examination results of the tracheal protrusions showed macrophages that were engorged with numerous yeast-like organisms 3 to 8 μm in diameter. These yeast-like organisms were spherical to oval and had a transverse septum shown by the arrows a and b (period acid-Schiff staining, 400×).Back to article page