Mid-term results of the first clinical trial designed specifically to evaluate the safety and effectiveness of two cell therapies that are showing early promise in treating angiitis-induced critical limb ischemia were released today in STEM CELLS Translational Medicine. The study, by researchers at Zhongshan Hospital/Fudan University in Shanghai, compared how transplantation of peripheral blood mononuclear cells fared versus transplantation of purified CD34+ cells in treating this condition.