RNA splicing is a crucial process in gene expression where non-coding regions of messenger RNA (mRNA) molecules, called introns, are removed and the remaining coding regions, called exons, are joined together. This process is essential for the proper functioning of genes and the production of functional proteins. RNA splicing is highly regulated and can result in the production of multiple different protein isoforms from a single gene through alternative splicing. Research in the field of RNA splicing focuses on understanding the mechanisms and regulation of splicing, as well as the impact of splicing alterations on health and disease. This area of research is important for understanding gene expression and protein diversity in cells and organisms.