Parameters statistically associated with p53 positivity. (A) p53 immunopositivity was associated with a statistically significant higher anti-apoptotic index 1 (p = 0.004). (B) p53 immunostaining in a sample of pleomorphic adenoma (C) high proliferation index in a sample of polymorphous low grade adenocarcinoma. High proliferative activity was associated with p53 positivity. AI-1 = BCL-2/BAX (Original magnification 400×).