Figure 1.

Representative H&E –stained sections from lung tissues of animals of the groups (A–C). (A) Lung section from drowned animals showing proteinaceous fluid within alveoli. (B) Lung section from downed animals showing mild to moderate vasodilatation and emphysema. (C,D) Lung section from animals of the group B showing proteinaceous fluid in alveolar space, vasodilatation and emphysema. (E) Lung section from animals of the Group C showing proteinaceous fluid within alveoli, vasodilatation and intra-alveolar hemorrhages. Hematoxylin and eosin stain, original magnification 20×. (F) Lung section from animals in the group A showing foreign and unstained material, characterized by small and elongate structures, often with multiple striae perpendicular to their major axis, consisting of diatoms Hematoxylin and eosin Stain, original magnification 10×.