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Electrospinning is a simple and robust method to produce micro and nanometer diameter fibers to mimic the architecture of extracellular matrix (ECM) for tissue engineering.However,the relatively small pores of electrospun scaffolds have become a bottleneck that limits efficient cellular infiltration and tissue ingrowth [1-2].To overcome this problem,we improved the electrospinning technique to make macroporous fibrous scaffolds.First,the composite fibrous scaffolds were formed by dualelectrospinning of PCL with PEO/NaCl salt (25-50 μm) onto a common rotating mandrel,and PCL macroporous scaffolds (pore size around 30 in) were created after PEO/NaCl salt dissolved in water,without difficulty in washing away salt embedded deep in the scaffolds.