3D printing is a process of making a three-dimensional solid object of virtually any shape from a digital model. 3D printing technology is used for both prototyping and distributed manufacturing with applications in architecture, construction (AEC), industrial design, automotive, aerospace, military, engineering, civil engineering, dental and medical industries, and more importantly, biotech.
For some patient who got organ failure, they have hope on 3D printing. It is because scientists have been printed kidney, and it could survive for 1 day. Further research is needed in order to implant the 3D printed human organs into patients.
In some sense 3D printing organs can resolve the ethics issue raised from implanting animal organs or organs cloning. Implanting animal organs have potential hazard that it may cause unpredictable diseases. Moreover, human who have been implanted animal organs may have a chance to be discriminated by others. On the other hand, 3D printing organs will not bring ethic issue that have just stated.
3D printing: http://en.wikipedia.org/wiki/3D_printing