MIT engineers have devised a 3-D printing technique that uses a new kind of

3D Printing
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MIT engineers have devised a 3-D printing technique that uses a new kind of ink made from genetically programmed living cells.
http://news.mit.edu/2017/engineers-3-d-print-living-tattoo-1205

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The ear is the avenue to the heart.

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I love cats because I enjoy my home; and little by little, they become its visible soul.