In specific microenvironment, the stem cells can differentiated into endothelioid cells having vasoactive role, which have a wide application future in the treatment of ischemic disease of lower extremity without outflow tract 在特定微环境下,能定向分化为具有成血管活性的内皮细胞,在治疗没有流出道的下肢缺血性疾病中有广阔应用前景。