Epithelial benign salivary gland tumours are relatively uncommon and constitute a wide spectrum of variable morphologic & biologic entities. Among these cytological and morphological properties of salivary gland tumours, one of the most important criteria for measuring its biological behaviour approach is cell proliferation. The cell proliferation / death balance is most important in the development of salivary gland tumours. Aim of the study is to examine the expression of Bax mRNA gene using in situ hybridization technique & PCNA protein immunohistochemically. Twelve formalin fixed paraffin...