Fig. 1

H&E staining: Paraffin section of lung showing normal alveolar epithelium (double arrows) and alveolar septa (single arrow) in control group (a). Perivascular (single arrow) and peribronchial (double arrows) infiltration of mononuclear cells following exposure of LPS (b), high dose of 2,4-D without LPS (c), low dose of 2,4-D without LPS (d), high dose in combination with LPS (e), low dose in combination with LPS (f). Haematoxylin and Eosin staining. Original magnification: 40X; 6 animals from each group were used