The Chicago Tribune is reporting that the enormous, lavishly funded biotech research arm of the University of Illinois-Chicago has successfully crafted part of a human jaw using rat stem cells. [login: gapers/gapers]. They also proved that once the process becomes standardized, it will be relatively inexpensive (or as inexpensive as anything having to do with medicine ever is). But if they need more rats, I know a few nice rat families that have made quite a living under our deck.