From EurekAlert!: "researchers have used adult bone marrow stem cells to regenerate healthy human liver tissue ... When large, fast-growing cancers invade the liver, some patients are unable to undergo surgery, because removing the cancerous tissue would leave too little liver to support the body. Researchers [used] adult bone marrow stem cells to help quickly regenerate healthy liver tissue, enabling patients to eventually undergo a surgical resection. ... Our study suggests that liver stem cells harvested from the patient's own bone marrow can further augment and accelerate the liver's natural capacity to regenerate itself ... researchers compared the results of portal vein embolization (PVE), a technique currently used to help regenerate liver tissue, to a combination of PVE and an injection of bone marrow stem cells into the liver. ... Patients who received the combination of PVE and stem cell injection had double the liver growth rate and gain in liver volume, compared with those who underwent PVE alone."