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Histological sections of left and right lungs of sheep treated with bacterial endotoxin show less inflammation and congestion in the lungs treated with stem cells. Lung biopsies were fixed in 10% formalin and stained with hematoxylin and eosin (H&E; magnification 10x). Sections are shown for left and right lungs before endotoxin infusion and at the end of the study of representative animals of each group (control (LPS) and LPS + stem cells). LPS, lipopolysaccharide.
