FIGURE 1-Effects. of Hev b 13 treatment on pulmonary histology of H&E (magnification 40X): A) pulmonary tissue from the Normal Control group without morphological changes; B) Surgical control group with slight thickening of alveolar septa and rare hemorrhagic spots; C) Saline solution group with marked thickening of alveolar septa, hemorrhage and inflammatory infiltrates; D) Hev b 13 group with moderate thickening of alveolar septa, mild hemorrhage and inflammatory infiltrates.