Figure 2.
Endobronchial biopsy in a 62-year-old patient with irreversible asthma. In comparison to Figure 1, the reticular basement membrane is significantly thickened, measuring 13.1 μm (PAS stain, ×20).
Endobronchial biopsy in a 62-year-old patient with irreversible asthma. In comparison to Figure 1, the reticular basement membrane is significantly thickened, measuring 13.1 μm (PAS stain, ×20).