Enhanced caveolin-1 expression in smooth muscle cells: Possible prelude to neointima formation

Figure 2 Pulmonary arteries (experimental groups). A and B: Pulmonary arteries (size 200-317 μm) from the controls and different experimental groups (elastic van Gieson stain): At 2 and 4 wk, arteries from MCT (M), hypoxia (H) and MCT + hypoxia (M + H) exhibit increased medial wall thickening compared with the control (C). Magnification = × 100; C: Arteries (size 100-155 μm) from 4 wk M + H group showing the presence of neointima. Fragmentation of internal elastic lamina can be seen in these arteries. Magnification = × 400.