The method of this invention takes {HEAD ~ advantage} of {TAIL ~ the method} for identifying nucleic acid ligands referred to as SELEX 
of
The method of this invention takes { HEAD ~ advantage } of { TAIL ~ the method } for identifying nucleic acid ligands referred to as SELEX
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH