USA 85:8998 9002) to generate cDNAs by using PCR to amplify copies of {HEAD ~ the region} between {TAIL ~ a single point} in the transcript and the 3′ or 5′ end 
between
USA 85:8998 9002 ) to generate cDNAs by using PCR to amplify copies of { HEAD ~ the region } between { TAIL ~ a single point } in the transcript and the 3′ or 5′ end
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH