Fig. 1From: Prevalence of human papillomavirus in sinonasal squamous cell carcinoma with and without association of inverted papilloma in Eastern ChinaThe representative immunohistochemical staining of p16 (100Ć). a p16 negative; b p16 positive in IP-SNSCC; c p16 positive in DN-SNSCC. DN-SNSCC: de-novo sinonasal squamous cell carcinoma; IP-SNSCC: inverted papilloma derived sinonasal squamous cell carcinomaBack to article page