Fig. 4

Microtubule (MT) network and distribution of NPs within the cell. a Schematic diagram of a cell illustrating the transport of vesicles along the MTs within the cell. b Schematic explaining the directional transport of vesicles containing GNPs along the MTs. c MT network (1) of a HeLa cell and the merged image (2) of the MT network and distribution of vesicles containing GNPs. MTs and vesicles containing GNPs are labeled in green and red, respectively. d, e MT network and GNP distribution in FBs and CAFs, respectively