Fig. 2From: Squamous cell carcinoma initially occurring on the tongue dorsum: a case series report with molecular analysisImmunohistochemical analysis of dorsal tongue SCC. Representative immunohistochemical staining of p53 in case 1 (a), 2 (b), 3 (c), and 4 (d). Cases 1–3 showed normal wild-type expression pattern (negative to weakly positive), and case 4 showed strong expression. SCC, squamous cell carcinoma. Scale bars: 100 μm in Figs. a-dBack to article page