Next, the nucleic acid bound to the substrate is contacted with a first type of {HEAD ~ nanoparticles} having {TAIL ~ oligonucleotides} attached thereto 
having
Next , the nucleic acid bound to the substrate is contacted with a first type of { HEAD ~ nanoparticles } having { TAIL ~ oligonucleotides } attached thereto
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH