Immunohistochemical staining of MDM2, c-Myc in Lung cancer tissue and adjacent normal tissue slides. Tissue slides were stained with monoclonal anti-MDM2 antibody (A, B, C) and anti-c-Myc antibody (D, E, F), respectively. (A) Negative stain pattern of MDM2 in representative adjacent normal tissue (×400 magnification). (B and C) Positive stain pattern of MDM2 in representative lung cancer tissue (×100 and ×400 magnification). (D) Negative stain pattern of c-Myc in representative adjacent normal tissue (×400 magnification). (E and F) Positive stain pattern of c-Myc in representative lung cancer tissue (×100 and ×400 magnification).