NCIt definition : Removal of introns from mRNA precursors and the reattachment or annealing of exons.;
Alternative definition : NCI-GLOSS: The process by which introns, the noncoding regions of genes, are excised
out of the primary messenger RNA transcript, and the exons (i.e., coding regions)
are joined together to generate mature messenger RNA. The latter serves as the template
for synthesis of a specific protein.;