As summarized above, {TAIL ~ the R1 group} can include a biomolecule or a chemical group enabling {HEAD ~ the amplifier} to be attached to a biomolecule 
As summarized above , { TAIL ~ the R1 group } can include a biomolecule or a chemical group enabling { HEAD ~ the amplifier } to be attached to a biomolecule
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH