the 4.0 kb myc mrna of tepc 2027 is atypically stable while the 2.4 kb myc mrna undergoes normal rapid turnover within the same cell , demonstrating that the presence of first intron sequences in the large myc rna stabilizes it despite the presence of 3 ' ut and putative exon 1 destabilizing sequences .
C0007634
normal
C0015295
exon