Figure 8

Histopathological Examination Results at 21 Days After the Experiment (Scale bar = 200 μm). (a) HE Staining of Trachea After Nylon Brush Scraping. (b) HE Staining of Trachea After Steel Brush Scraping. (c) Masson's Staining of Trachea After Steel Brush Scraping. Car: Cartilage, Lp: Lamina propria, Ep: Epithelial layer.