Life Science College,Shandong Normal University,Jinan 250014,China;
Biomaterials Laboratory,Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;
Biomaterials Laboratory,Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;
Biomaterials Laboratory,Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;
Biomaterials Laboratory,Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;
Life Science College,Shandong Normal University,Jinan 250014,China;
surface modification; poly-L-lactic acid(PLLA); electrostatic self-assembly; vascular smooth muscle cells (VSMCs);