4Tafuro S, Zentilin L, Falaschi A, et al. Rapid retrovims titration using competitive polymerase chain reaction[J ].Gene Ther, 1996, 3:579
5Cashion LM, Bare LA, Harvey S, et al. Use of enhanced green fluorescent protein to optimize and quantitate infection of target cells with recombinant retroviruses[J].BioTechniques, 1999, 26:924
6Macdonald C, Walker S, Watts M, et al. Effect of changes in expression of the amphotropic retroviral receptor PiT- 2 on transduction efficiency and viral titer:implication for gene therapy [ J ]. Hum Gene Ther,2000, 11:587
7Miller AD, Chen F. Retrovirus packaging cells based on 10A1 murine leukemia virus for production of vectors that use multiple receptors for cell entry[J ]. J Virol, 1996,70:5564
8Choi JK, Hoang N, Vilardi AM, et al. Hybrid HIV/MSCV LTR enhances transgene expression of lentiviral vectors in human CD34 + hematopoietic cells[ J ]. Stem Cells, 2001, 19:236
9Kaneko S, Onodera M, Fujiki Y, et al. Simplified retroviral vector GCsap with murine stem cell virus long terminal repeat allows high and continued expression of enhanced green fluorescent protein by human hematopoietic progenitors engrafted in nonobese diabetic/severe combined immunodeficient mice [J ]. Hum Gene Ther. 2001, 12:35