background: the tp53 gene is the most important tumor suppressor gene in humans. the aim of our study was to determine the genotype frequency of three common tp53 polymorphisms (codon 72 bstui and intron 6 mspi, as well as the intron 3) in a group of iranian women with and without breast cancer. methods: paraffin-embedded specimens of 65 malignant breast cancer cases and 65 cases with benign br...