Hydrogel Aids in Printing Hearts

Hydrogel Aids in Printing Hearts
A breakthrough in 3D bioprinting brings researchers a step closer to printing fully functioning human hearts.

The technology developed by a team from Carnegie Mellon University overcomes the difficulty of printing with liquid collagen, a valuable biomaterial. Since liquid collagen will puddle in air, the team created a technique called FRESH (Freeform Reversible Embedding of Suspended Hydrogels), which relies on a hydrogel that offers a temporary support for the layers of collagen as they are printed. The gel can be removed by heating it to room temperature once the print is complete without damaging the collagen structure.

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