To explore the infection efficiency of human aorta vascular smooth muscle cells( VSMCs) infected by lentivirus vectors,human aorta VSMCs were cultured in vitro and infected with lentivirus vectors containing Ubi-EGFP-MCS-IRES-Puromycin. Cells were infected by lentivirus based on the multiplicity of infection( MOI) values(0,1,10,50 and 100) or different infection solutions( complete medium,complete medium containing polybrene,enhanced infection solution and enhanced infection solution containing polybrene). ...