Spare Parts for Humans: Tissue Engineers Aim for Lab-Grown Limbs, Lungs and More

A new research breakthrough has enabled scientists to grow human tissue to repair or replace organs, and someday, maybe even limbs. Science correspondent Miles O’Brien reports.

AIR DATE: Dec. 15, 2011

http://www.pbs.org/newshour/bb/science/july-dec11/tissuescience_12-15.html