Previous Article Next Article Table of Contents Nature, Vol.369, No.6481, 527-528, 1994 DOI10.1038/369527a0 Export Citation Origin of Introns - Early or Late - Reply Cerff R, Martin W, Brinkmann H Keywords:GROUP-II INTRON;GLYCERALDEHYDE-3-PHOSPHATE DEHYDROGENASE;GENES;TRANSPOSITION;EVOLUTION Please enable JavaScript to view the comments powered by Disqus.