5Weissleder R, Elizondo G, Wittenberg J, et al. Ultrasmall superaramagnetic iron oxide; characterization of a new class of contrast agents for MR imaging [J]. Rad,1990, 175: 489-493.
6Culver KW, Ram I, Wallbridge S, et al. In vivo transfer with retroviral vector producer cells for treatment of experimental brain tumors [J]. Sciences, 1992, 256:1550- 1552.
7Ido A, Nakaga K, Karo Y, et al. In therapy for hepatoma cell using a retrovirus vector carrying HSV -TK gene under the control of human a- fetal protein promotor [J]. Cancer Research, 1995, 55(4) :3195.
8Codsrd G, Boutorine A S, Saison B E, et al. Antisense effects of cholesterol - oligodeoxynucleotide conjugates associated with polycalkylcyanoacrylate nanoparticles[J]. Eur J Biochem, 1995, 232(2): 404 - 410.
9Zhu S G, Lu H B, Xiang J J, et al. Anovel nonvival nanoparticle gene vector: poly- lysine silica nanoparticles [J]. Chin Sci Bull, 2002, 47(8) :654 - 658.
10Pierre Lehn, Sylvie Fabrega, Noufissa Oudrhiri, et al.Gene delivery systems: bridging the gap between recombinant viruses and artificial vectors [J]. Adv Drug Delve Rev, 1998, 30: 5 - 11.
