Methods of screening for {HEAD ~ nucleoside analogs} that are incorporated by {TAIL ~ HIV reverse transcriptase} and cause incorrect base pairing 
Methods of screening for { HEAD ~ nucleoside analogs } that are incorporated by { TAIL ~ HIV reverse transcriptase } and cause incorrect base pairing
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH