Harriet Harriss and Matt Harrison will exchange vows and rings. Nothing unusual about that, except the rings will be made out of their own bones!
The scientists extracted the participants' wisdom teeth to get at a sliver of bone that attaches them to the jawbone.
They then dissolve the bone mineral and extract the bone cells to go into the lab.
These are fed with nutrients and grown on a "scaffold" material called bioglass, a special bioactive ceramic which mimics the structure of bone material.
The real goal, of course, is to learn to grow large bits of bone for those with cancer or who need bone replacement.