Artificial bladder shows promise in dogs:

Artificial bladders engineered in the laboratory by US scientists worked as well as the real thing in dogs for nearly a year, according to a study published in Nature Biotechnology (February). To grow the new organ, the researchers, from Harvard Medical School in Boston, layered two types of cells harvested from biopsies of the dogs' bladders onto preformed, bladder-shaped, biodegradable polymers. After the cells had grown into artificial bladders, they were implanted into dogs whose own organs had been removed. The bladders functioned normally soon after implantation and continued to do so for at least 10 months.