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