Photomicrographs of Bcl-2 immuno-expression in adult male lung sections revealing: (A) in group I (control): many cells having strong positive immunoreaction (arrows) represented by the brown color of the cytoplasm, (B) in group II (diseased): very weak immunoreaction (arrows), (C) in group III (diseased, 50 mg/kg FEE): few cells with positive Bcl-2 immunoreaction (arrows), (D) in group IV (diseased, 100 mg/kg FEE): certain cells with strong positive immunoreaction, (E) in group V (diseased, 150 mg/kg FEE): multiple cells with strong positive immunoreaction and (F) in group VI (150 mg/kg FEE only): frequent cells with strong positive immunoreaction (arrows). [Bcl-2 immunostaining ×400, scale bar = 50 μm].