1 Department of Reproductive Medicine, University of California, San Diego, La Jolla, California, 92093, USA.
2 1] Department of Reproductive Medicine, University of California, San Diego, La Jolla, California, 92093, USA. [2] Institute of Genomic Medicine, University of California, San Diego.
An intricate recursive RNA splicing mechanism that removes especially long introns (non-coding sequences) from genes has been found to be evolutionarily conserved and more prevalent than previously thought.