The preparation of superparamagnetic Fe
3
O
4
/SiO
2
-polyethyleneimine composite particles and their applications in gene delivery
Zhang Qing-yun, Li Rong-rong, Deng Gui-ru, Zhu Hui, Yang Xiao-ying
Chinese Journal of Tissue Engineering Research . 2014, (
16
): 2570 -2575 . DOI: 10.3969/j.issn.2095-4344.2014.16.018