Fig. 1From: The value of p16INK4a immunostaining for high-grade squamous intraepithelial lesions in human papillomavirus-negative patientsThe images of typical positive cases. A is the HSIL of HE staining, B is the corresponding P16 staining; C is the LSIL of HE staining, D is the corresponding P16 staining. The P16 of HSIL is deeply stained, with large brown areas. LSIL's P16 stain is light and flaky yellowBack to article page