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Morphological changes in ex vivolung tissue after exposure to e-liquid: (a) atelectasis (red arrow and box); (b) immersion fluid permeation in lung tissue (red arrow and box); (c) thickening of the inter-alveolar septa (red arrow and box); (d) signs of desquamation of the bronchial epithelium (red arrow and box). H&E. Magnification: 64.6 and 246.4.
