When it comes to 3D printing in the medical field, it seems like Australia is the place to watch these days. About a year ago, the University of Wollongong, St. Vincent's Hospital Melbourne, and its Aikenhead Centre for Medical Discovery (ACMD), teamed up to develop the BioPen, which is filled with stem cells and allows surgeons to essentially draw new cartilage into injured knees. We've now learned that Melbourne surgeons have successfully tested the breakthrough 3D bioprinting pen on six sheep. The extraordinary BioPen, which lets surgeons use 3D printing technology to draw missing tissue into patients, both human and animal, was developed by the University of Wollongong and the ACMD, which is based at St. Vincent's Hospital Melbourne. Read more at 3DPrint.com: http://3dprint.com/175766/3d-stem-ce...pen-cartilage/