title: Back to the RNA world--and beyond.
mesh_terms: D000818:Animals; D002384:Catalysis; D005815:Genetic Code; D014176:Protein Biosynthesis; D012313:RNA / Q000096:biosynthesis / Q000235:genetics*; D012343:RNA, Transfer / Q000235:genetics; D012324:RNA-Dependent RNA Polymerase / Q000378:metabolism; D013768:Tetrahymena / Q000235:genetics
chemical_list: D012313:RNA; D012343:RNA, Transfer; D012324:RNA-Dependent RNA Polymerase