{TAIL ~ The biomolecules} can be labeled with {HEAD ~ the dyes} either directly or indirectly through a phosphoramidite 
{ TAIL ~ The biomolecules } can be labeled with { HEAD ~ the dyes } either directly or indirectly through a phosphoramidite
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH