Figure 10: TEM micrograph of GIII lung tissue section: (a) Fibroblast cells (1); collagen fibers (2); lymphoid cells (3); plasma cells (4); swollen pneumocytes type II with destruction of mitochondrial cristae and presence of lamellar bodies (5); part from macrophage cells containing electron-dense bodies and numerous vacuoles (6) (7th dpi). (b) Lining epithelium of the terminal bronchiole showing Clara cells (1) (containing numerous secretory granules as well as swelling and hydropsy of the cell); Goblet cells (2) (7th dpi). (c) Bundles of collagenous fibers running in different directions (1); part of fibroblast cell (2) (14th dpi). (d) Epithelial lining of terminal bronchiole showing ciliated epithelial cells (1); nonciliated epithelial cells containing electron-dense secretory granules with microvilli on their apical surface (2) (14th dpi).