Researchers from the University of Kentucky recently managed to genetically engineer a cancer resistant mouse. The team, headed by Professor Vivek Rangnekar, engineered the mouse so that a certain part of the Par-4 gene would be expressed in its cells, making it resistant to tumors. Because this component of the Par-4 protein was found to induce cell-death in cancer cells (but not in healthy normal cells), the scientists used it to turn the mouse into a tumor-resistant rodent. http://www.tfot.info/news/1090/cancer-resistant-mouse-created.html