Liver cold preservation induce lung surfactant changes and acute lung injury in rat liver transplantation

Figure 3 Immunohistochemical sections of tumor necrosis factor-α and interleukin-1β in lung (× 400). A: Immunohistochemistry sections of TNF-α with different CPT; B: Immunohistochemical staining of IL-1β with different CPT; C: Analysis of TNF-α and IL-1β levels. The results were expressed as absorbance unit (A). ^aP < 0.05 vs sham group; ^bP < 0.05 vs 45-min group; ^cP < 0.05 vs PDTC group. PDTC: Pyrrolidinedithiocarbamate; CPT: Cold preservation time; TNF: Tumor necrosis factor; IL: Interleukin.