Engineering Body Parts - A Great Scientific Breakthrough?

This is a facinating video of the TED conference where Dr. Anthony Atalla talks about engineering blood vessels, bladders, and kidneys using human stem cells. While blood vessels and bladders have been successfully engineered, the more complex organs like kidneys and livers, are still in an experimental stage.

The awesome thing about all this is that since the stem cells are obtained from the patient's organs, there is no possibility of the body rejecting the engineered organ, and no immune suppressing drugs are required.