The normal size of the fragments from the plasmids cut by endonucleases: The results of restriction endonuclease analysis and agar electrophoresis indicated that size of plasmids pMSCV, CED-4pMSCV, pGAG-POL and pVSV-G was normal.

• 质粒DNA酶切片段大小正常：酶切质粒、电泳结果表明，pVSV-G, pGAG-POL, pMSCV,CED-4pMSCV 质粒DNA大小正常；