<p>Sugar found in the shells of sea creatures could hold the key to a treatment for spinal injuries, giving hope to patients paralysed by disease or accidents.</p> <p>The research is in the early stages and has so far been carried out on guinea pigs but the scientists are hopeful it may lead to treatments for humans. Photo: ALAMY <br /> Researchers have found that by altering a sugar found in shells they were able to patch up damaged nerve cells in the spinal cord…</p>