Anti-apoptotic index 1 (black bars) and 2 (white bars) in the malignant and benign salivary gland neoplasms. Most of the samples exhibited an anti-apoptotic profile. All the pleomorphic adenoma samples exhibited more BCL-2 than CASP3 transcription. Samples #19, #21 and #22, which showed a decreased AI-1 and 2, were p53 negative. X-axis represents the normal salivary glands pool of samples included as reference sample in all the reactions. AI-1 = BCL-2/BAX, AI-2 = BCL-2/CASP3.