Slices of life

2019-03-07 06:12:05

By Barry Fox A team from the University of Pittsburgh and Carnegie Mellon University have worked out how to grow 3D tissue grafts (WO 99/48541). Thin slices of porous “scaffold” material are seeded with cells which grow into a layer around a quarter of a millimetre thick. Biodegradable nuts and bolts link the slices together so that the tissue grows into a 3D shape ready for transplant. The joints disintegrate as the tissue bonds with the patient’s own tissue. You can make scaffold slices from different materials: hypoxyapatite for bone cells, and collagen, say,