Then, to increase the specificity and sensitivity of RACE products, we
employed a mixture of both reactions for a subsequent PCR, in whichwe
used the gene-specific sequences AAGGAGGACATGCGGCTCACATandGGCTCACATTGCCCCCGTGTAas
nested reverse primers
(program: 2 min initial denaturation at 94C; 25 cycles: denaturation for
30 s at 94C; annealing for 30 s at 58C, elongation for 30 s at 72C; final
extension for 10 min at 72C). From this approach we obtained a useful
cDNAfragment of 180 bp (including 44 bp of the GeneRacerTM 5 oligo).