After the nanoparticle {HEAD ~ oligonucleotide conjugates} are bound to {TAIL ~ the substrate}, the substrate is washed to remove any unbound nanoparticle oligonucleotide conjugates and nucleic acid 
are bound to
After the nanoparticle { HEAD ~ oligonucleotide conjugates } are bound to { TAIL ~ the substrate } , the substrate is washed to remove any unbound nanoparticle oligonucleotide conjugates and nucleic acid
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH