Vunjak-Novakovic's team succeeded in growing cartilage with physiologic architecture and strength by radically changing the tissue-engineering approach: inducing the mesenchymal stem cells to undergo a condensation stage as they do in the body before starting to make cartilage.
Forget solid, liquid, and gas: there are in fact more than 500 phases of matter -In a major paper in Science, Perimeter Faculty member Xiao-Gang Wen reveals a modern reclassification of all of them. http://www.nanowerk.com/news2/newsid=28214.php#
"The synthetic scaffold of an ear sits bathed in cartilage-producing cells, part of an effort to grow new ears for wounded soldiers." http://ngm.nationalgeographic.com/2011/03/big-idea/organ-regeneration-text