{HEAD ~ The method} 5 wherein the oligonucleotides are present on {TAIL ~ surface} of the nanoparticles at a surface density of at least 15 picomoles/cm2 
{ HEAD ~ The method } 5 wherein the oligonucleotides are present on { TAIL ~ surface } of the nanoparticles at a surface density of at least 15 picomoles / cm2
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH