RT Journal A1 Tam, P E A1 Schmidt, A M A1 Messner, R P T1 Modified tissue pulverization technique and evaluation of dihydrofolate reductase amplification as a pan-tissue RT PCR control. JF Genome Research JO Genome Research YR 1993 FD August 01 VO 3 IS 1 SP 71 OP 72 UL http://genome.cshlp.org/content/3/1/71.abstract