{TAIL ~ The dyes} are useful as fluorescent labels of biomolecules, such as {HEAD ~ oligonucleotides} and deoxyribonucleosides 
{ TAIL ~ The dyes } are useful as fluorescent labels of biomolecules , such as { HEAD ~ oligonucleotides } and deoxyribonucleosides
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH