Fig. 2From: Carcinogenic effect of potassium octatitanate (POT) fibers in the lung and pleura of male Fischer 344 rats after intrapulmonary administrationPulmonary alveolar cell hyperplasia in rats in the 0.50 mg POT (a, b) and 0.50 mg MWCNT-7 (c, d) treated groups. Infiltration of alveolar macrophages phagocytizing POT fibers and MWCNT-7 (black arrows), thickening and fibrosis of the alveolar wall (blue arrows), and hyperplasia of alveolar epithelium (green arrows) can be seen. Insert, polarized light microscope imagesBack to article page