Figure 2From: Detection of HPV and the role of p16INK4Aoverexpression as a surrogate marker for the presence of functional HPV oncoprotein E7 in colorectal cancer Immunohistochemical analysis of p16 INK4A expression in colorectal carcinomas. A: no p16INK4A expression (negative) in tumor cells. B: weak expression of p16 in tumor cells. C: moderate expression of p16INK4A in tumor cells and D: strong expression of p16INK4A with a strong intensity in tumor cells.Back to article page