I work at the University of Utah and the work done by Dr. Prestwich was highlighted a couple of months ago in an article. There is actually a company making and selling the gel Dr. Prestwich was talking about. The website is http://www.glycosan.com. They aren't very close to really doing much with organ printing-right now they're using it for 3-D cell culture- but in the future they have plans to do something of the sorts. Supposedly, this gel can be used for all sorts of stuff right now, like: cell culture, angiogenesis assays, chemoinvasion assays, etc. It'll be neat to see if they do anything with the organ printing. I've heard that they've actually already done the organ printing thing with a bladder and actually transplanted it into a person. I can't remember the source, however, so maybe I'm not remembering that correctly.