Amplifier molecules can include {TAIL ~ a targeting group} permitting the molecules to preferentially attach to {HEAD ~ a particular anatomical or physiological situs} 
Amplifier molecules can include { TAIL ~ a targeting group } permitting the molecules to preferentially attach to { HEAD ~ a particular anatomical or physiological situs }
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD