Complex organ re-engineered for bladder transplants

For the first time, US scientists have rebuilt a complex human organ, the bladder, using live tissue grown in the lab – a breakthrough that could hold exciting promise for one day regenerating ailing hearts and other organs.

Only simpler tissues – skin, bone, and cartilage – have been lab-grown in the past. This is the first time that a more intricate organ has been mostly replaced with tissue grown from the patient’s own cells.