This trial is exploring whether the patient’s own bone marrow can benefit patients with liver failure due to damage caused by Hepatitis B infection. The trial involves one group of participants being treated with stem cells obtained from their own bone marrow (interventional arm), and a second group receiving conventional treatment for this condition (control arm). The trial is being conducted at the 452 PLA Hospital in China's Sichuan Province and is expected to run to September 2015 by which time they aim to have treated a total of 100 participants. Participants will be monitored for changes in liver function and clinical evidence of improvement in neurological function (hepatic encephalopathy).