Figure 4. Trauma plus ischemia-reperfusion group. Lymphocytic infiltration was manifest in the entire lung. Terminal bronchiolar walls have patchy degeneration areas. Broad cell infiltration in alveolar area was noted. Patchy hemorrhageswere seen interalveolar areas and in alveolar lumen. Perivascular lymphocytic infiltration and cellular debris in the terminal bronchiolar lumen were noted (hematoxylin-eosin 4A 100, 4B 400).