Fig. 3

Dual-labeled immunofluorescence of TP53-binding protein 1 (green) and Ki-67 (red) expression in oropharyngeal epithelial lesions. (A) Oropharyngeal inflammatory disease. (B) Oropharyngeal benign tumor. (C) P16INK4a–positive oropharyngeal squamous cell carcinoma (OPSCC). (D) P16INK4a–negative OPSCC. The scale bars indicate 10 µm.