nanoparticle Technology: general issues 15 nanoparticles 14 drug delivery 12 cancer 7 cytotoxicity 7 nanomaterials 6 encapsulation 5 gold nanoparticles 5 immunotherapy 5 History of engineering & technology 4 Research & information: general 4 chitosan 4 graphene 4 mechanical properties 4 microstructure 4 nanocomposite 4 nanomedicine 4 nanotechnology 4 photothermal therapy 4 self-assembly 4 silver nanoparticles 4 zinc 4 Medicine 3 PLGA 3 adsorption 3 antibacterial activity 3 anticancer 3 biocompatibility 3 breast cancer 3