Szukana fraza: [Abstract = "In this work we present the results of simulation studies showing possibilities of single gene regulation by \"small interfering RNA\" \(siRNA\) that can increase radio\-sensitivity of malignant cells showing aberrations in the p53 signaling pathway, responsible for DNA damage\-dependant apoptosis. By blocking the production of the p53 inhibitor Mdm2, radiation treated cancer cells are pushed into the apoptotic state on a level normally achievable only with high radiation doses."]