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