. "\"The chemical reactions and pathways resulting in the breakdown of the transcript body of a nuclear-transcribed mRNA that occurs when the ends are not protected by the 5'-cap or the 3'-poly(A) tail.\" [GOC:krc]" . . "nuclear-transcribed mRNA catabolic process, exonucleolytic" . "exonucleolytic degradation of mRNA" . "mRNA breakdown, exonucleolytic" . "mRNA degradation, exonucleolytic" . "nuclear mRNA catabolic process, exonucleolytic" . .