BRISTOL, England, Sept. 29 (UPI) -- A clinical trial in Britain is testing a new stem-cell treatment researchers hope will undo central nervous system damage in patients with multiple sclerosis.

The patients are being injected with stem cells taken from their own bone marrow, The (London) Telegraph newspaper said Friday.

Neil Scolding, professor of clinical neuroscience for North Bristol National Health Service Trust, is leading the trial. He said doctors believe giving patients large numbers of their own bone marrow cells will stabilize the disease and repair damage to the brain and spinal cord.

The test involves a small sample of six people between the ages of 30 and 60, the newspaper said.