The Type II alveolar epithelial cells in the bosentan group (×8000).

<p>The damage was ameliorated to some degree relative to the PQ group. Their nuclei membrane and the endoplasmic reticulum were integral and smooth, the mitochondrial cristae were limpid but still a litter disorder, vacuolation of the lamellar bodies were ameliorated, a few mature lamellar bodies were observed.