RT Journal A1 Singer-Sam, J A1 LeBon, J M A1 Dai, A A1 Riggs, A D T1 A sensitive, quantitative assay for measurement of allele-specific transcripts differing by a single nucleotide. JF Genome Research JO Genome Research YR 1992 FD February 01 VO 1 IS 3 SP 160 OP 163 DO 10.1101/gr.1.3.160 UL http://genome.cshlp.org/content/1/3/160.abstract AB We have found that the single nucleotide primer extension assay, a PCR-based assay currently used qualitatively to measure allelic differences in DNA, can be used quantitatively to measure allele-specific transcripts differing by only a single nucleotide. We show that total RNA containing the Pgk-1a transcript can be specifically detected even in a 1000-fold excess of RNA containing the Pgk-1b transcript.