This study was evaluating histopathological changes in lung tissue induced by formaldehyde vapors in mice. A group of 20 adult male mice was divided into two groups for this purpose. The mice in group (I) are the controls. whereas the mice in groups (II) were exposed to formaldehyde vapors inhalation in a toxic dose (0. https://allfixelectricales.shop/product-category/enamel-trivet/