Researchers, investigating how blood vessel growth keeps cancers alive, claim to have made a breakthrough that could boost the chances of successfully treating life-threatening tumours. A team at the Western Australian Institute for Medical Research, led by Ruth Ganss, has found that a gene called RGS5 can reverse angiogenesis - the growth of blood vessels inside the tumour, the Nature journal reported. "It's the uncontrolled growth of blood vessels and the formation of abnormal blood vessels inside tumours that