Bladder-builder welcomes windpipe

It's a big day in the consumer media, abuzz with the news that doctors linkurl:engineered a windpipe;http://www.the-scientist.com/article/daily/53878/ for a 30-year-old woman using her own stem cells, but at the offices of linkurl:Tengion,;http://www.the-scientist.com/article/daily/53878/ a Pennsylvania biotech currently building bladders using patient cells, it's just business as usual. This news "confirms what we know," said Gary Sender, chief financial officer at Tengion. "We know we are in