Ten out of 19 patients with advanced kidney cancer have responded dramatically to an experimental treatment in which they received a transplant of blood-producing cells from a brother or sister, the Washington Post has reported, quoting a new study. Immune-system cells in the transplants apparently mounted an attack on the patients' tumours, causing them to disappear completely in three cases and to shrink by more than 50 percent in several others, according to the pilot study by researchers in the National Institutes of Health. However, two recipients died from the effects of the treatment. Bureau Report