title: An intermediate in the synthesis of poliovirus RNA.
mesh_terms: D002499:Centrifugation, Density Gradient; D007700:Kinetics; D017955:Poliovirus / Q000378:metabolism*; D012367:RNA, Viral / Q000096:biosynthesis*; D012260:Ribonucleases; D014529:Uridine
chemical_list: D012367:RNA, Viral; D012260:Ribonucleases; D014529:Uridine