The present invention provides methods of screening for {HEAD ~ a nucleoside analog} that is incorporated and extended at high efficiency by HIV RT and causes {TAIL ~ incorrect base} pairing 
causes
The present invention provides methods of screening for { HEAD ~ a nucleoside analog } that is incorporated and extended at high efficiency by HIV RT and causes { TAIL ~ incorrect base } pairing
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH