Objective To construct a eukaryotic expression vector for p16 gene and determine its expression in osteosarcoma U-2OS cells.Methods Total RNA of HeLa cells was extracted,with which p16 gene was amplified and cloned into eukaryotic expression vector pcDNA3-HA.The constructed recombinant plasmid pcDNA3-HA-p16 was transfected to U-2OS cells,and the expression of p16/HA was identified by IFA and Western blot.Results Restriction analysis and sequencing proved that recombinant plasmid pcDNA3-HA-p16 was constructe...