What is the prevalence of the Bio-printing?

"If I have to guess, I'd say that in 20 years this technology will be mainstream, absolutely,"
                                         -- Hod Lipson, University Cornell


“…technologies like 3D printing are showing phenomenal new promise…”
                                         --Daniel Kraft, Stanford University

   http://www.bbc.co.uk/news/science-environment-12507034
   http://news.cnet.com/8301-13772_3-20002741-52.html?tag=mncol;2n