ComputerWorld reports that "advances in the 3D printing of human tissue have moved fast enough" that bio-printing company Organovo expects a 3D-printed lived to be available as soon as 2014. The organs will not be used for transplants, however.
Like other forms of 3D printing, bio-printing lays down layer after layer of material -- in this case, live cells -- to form a solid physical entity -- in this case, human tissue. The major stumbling block in creating tissue continues to be manufacturing the vascular system needed to provide it with life-sustaining oxygen and nutrients.
Living cells may literally die before the tissue gets off the printer table.
Organovo, however, said it has overcome that vascular issue to a degree. "We have achieved thicknesses of greater than 500 microns, and have maintained liver tissue in a fully functional state with native phenotypic behavior for at least 40 days," said Mike Renard, Organovo's executive vice president of commercial operations.
A micron is one-millionth of a meter. To better understand the scale Renard is describing, think of it this way: A sheet of printer paper is 100 microns thick. So the tissue Organovo has printed is the thickness of five sheets of paper stacked on top of each other.
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