This handout photo provided by Cornell University, taken Feb. 13, 2013, shows Cornell University biomedical engineer Lawrence Bonassar holding the scaffolding for an ear his laboratory

 

              This handout photo provided by Cornell University, taken Feb. 13, 2013, shows Cornell University biomedical engineer Lawrence Bonassar holding the scaffolding for an ear his laboratory
This handout photo provided by Cornell University, taken Feb. 13, 2013, shows Cornell University biomedical engineer Lawrence Bonassar holding the scaffolding for an ear his laboratory is creating using a 3-D printer and cartilage-producing cells. Printing out body parts? Cornell University researchers showed it's possible by creating a replacement ear using a 3-D printer and injections of living cells. The work reported Wednesday is a first step toward one day growing customized new ears for children born with malformed ones, or people who lose one to accident or disease. (AP Photo/Lindsay France, Cornell University)