【Objective】To study the effects of heparin alone or combined with laminin on the differentiation of the rat adipose derived mesenchymal stem cells(AD-MSCs) into the motoneurons, and to provide the theoretical basis for further clinical application as seed cells.【Methods】AD-MSCs of rat were extracted and purified by the enzyme digestion method. The expressions of the surface antigen CD31, CD44, CD49 d, CD106 were detected. Proliferation activity was detected by MTT method. Four groups were classified accordi...