Brave New World Watch

A tissue-engineering group has created functional blood vessels and cardiac tissue by "using a 'printer' that dispenses cells instead of ink":

What makes this work different from that done in most other tissue-engineering labs is that Forgacs's team does everything without a scaffold they don't start with an object shaped like the tissue or organ they are aiming to create, but instead plan to print the whole thing from scratch, from the vasculature up. This should make it easier to print any type of organ, they say, as they don't have to develop different scaffolds for each tissue type.