Representative pictures of C/EBPβ staining results with varying intensities (0 to 4) are shown in Figure 1A. As shown in Figure 1B and Table 1, the proportion of normal lung tissues with positive C/EBPβ staining was only 30.9%, whereas positive C/EBPβ staining increased up to 67.3% in the primary lung cancer tissues, including 29.4% of strong staining intensity (score 2–4). The gene discussed is CEBPB; the disease is lung carcinoma.