Wang, Xueqin, Huiru Zhang, Hongjuan Jing, and Liuqing Cui. 2015. “Highly Efficient Labeling of Human Lung Cancer Cells Using Cationic Poly-L-Lysine-Assisted Magnetic Iron Oxide Nanoparticles”. Nano-Micro Letters 7 (4):374-84. https://doi.org/10.1007/s40820-015-0053-5.