This procedure involved stem cells, but also a scaffold that could be used to make a whole artificial organ.

Instead of a mere circumcision, the whole organ had been lopped off.

Pipes will be added or subtracted as needed, although some of the project's backers dream about building a whole organ one day.

This compares with about 16,000 transplants of whole organs, a business that has been regulated for decades.

"I'd just thought this stuff out in front was the whole organ," he said.

The tissue includes heart valves, tendons and bones but not whole organs.

This compares with about 16,000 transplants of whole organs from 4,500 donors.

Suppose you could take whole organs from animals you killed and install them in yourself to replace whatever was wearing out.

However, glycerol cannot be used to protect whole organs from damage.

The package created, in effect, a whole new organ in the brain.