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This may be off the subject a bit but, I was thinking of 3d printing for organisms the other day. Question; sugar (as a frame-work to grow tissue) has been tried, but what about chocolate? It melts at near body temp. and should be easy to print. Can it be implanted and then be quickly absorbed? Or would it cause rejection. Would any other material (cheap material) work? Would have to be sterile and chilled. I was thinking about implants for the eye, but this wouldn't be the right choice for a lot of reasons. Maybe for some other area of the body.