Figure 22: Electron micrograph shows the cilia (C ), the ciliated lingual layer (Cl) in the laryngotracheal depresion (Ltd), which is nestling the laryngotracheal organ in C. sepsoides tongue. Note the lingual papillae (Lg) of the posterior region (left side), ciliated lingual tracheal lip (Lt), inflixible folds (If) and T-shaped orifice of the laryngotracheal organ (Lo). ×150.