Key points from article :
Jikei University School of Medicine in Tokyo grew kidneys, drainage tube and bladder from pig and rat stem cells.
Successfully passed urine when transplanted and still working eight weeks later.
One person a day dies in the UK alone waiting for a kidney transplant.
Hope is that patients could use dialysis machine until new kidneys grown for them from their own stem cells.
The study was published in the Proceedings of the National Academy of Sciences.
