An exemplary method involves detection of single molecules of fluorescent labels released from a nucleic acid during {HEAD ~ synthesis} of {TAIL ~ an oligonucleotide} 
An exemplary method involves detection of single molecules of fluorescent labels released from a nucleic acid during { HEAD ~ synthesis } of { TAIL ~ an oligonucleotide }
OTH 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 TAIL