Students at Ludwig-Maximilian University of Munich and the Technical University of Munich formed up a team called Team BiotINK and have discovered a way of 3d printing without going through scaffold formation. Using ultimaker 2+ 3d printer and biotink with streptavidin, the 3d printing can now be done without scaffolds and hence reducing the cost of 3d printing.

Source: https://hackaday.io/post/45584