a) Schematic drawing to show the preparative procedures for IONP-C/O@LP. b–e) TEM images of IONP, IONP-C/O conjugates, and IONP-C/O@LP under different magnifications, respectively. f-g) Hydrodynamic size profiles and zeta potentials of IONP,IONP-C/O,IONP-C/O@L,C/O@LP,IONP-C/O@LP nanoformulations, respectively. Data are shown as mean ± SD (n = 3). (Reprinted f rom ref. (82) under the terms and conditions of the Creative Commons Attribution (CCBY) license (http://creativecommons.org/licenses/by/4.0/).).