Abstract A subset of oropharyngeal squamous cell carcinoma (OPSCC) is caused by the high-risk human papilloma virus (HPV). which expresses p16INK4a immunoreactivity. Dual-color immunofluorescence (IF) analysis of TP53 binding protein-1 (53BP1) and a proliferative indicator. Ki-67. https://foldlyers.shop/product-category/tuners/