Handheld Biopen Prints Human Cartilage

A handheld “biopen” capable of 3D printing cartilage tissue could for the first time be used during surgery to treat cartilage injuries and osteoarthritus. The extrusion-based device, which prints live stem cells embedded in a hydrogel material, produces constructs that look and behave just like natural articular tissue (Biofabrication 10 045006). 

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