PROVIDENCE, R.I. [Brown University] -- For cancer to spread, the cells that take off into the bloodstream must find a tissue that will permit them to thrive. They don't just go looking, though. Instead, they actively prepare the tissue, in one case by co-opting a protein that suppresses defenses the body would otherwise mount. In a new study, scientists report that by wresting back control of that protein, they could restore multiple defenses in the lungs of mice, staving off cancer's spread there.