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Nose and ear moulds, made of a nanocomposite material, are seeded with cells while soaking in a cell solution during work conducted at University College London's (UCL) Department of Nanotechnology and Regenerative Medicine at the Royal Free Hospital, Hampstead. The regeneration method they employ has evolved from stem cell research, but instead of using embryonic stem cells, it uses adult cells harvested from the patient's own bone marrow.