Figure 2From: Cyclin A1 shows age-related expression in benign tonsils, HPV16-dependent overexpression in HNSCC and predicts lower recurrence rate in HNSCC independently of HPV16 Immunohistochemical staining of Cyclin A1 (a), p16 (b) and p53 (c) in a benign tonsil. Tonsil of a 41 year old man; HPV16 negative; Cyclin A1 overexpression (category 4); P16 category 2; P53 category 2; original magnification: x50Back to article page