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