title: Studies on ribosomal RNA from Tetrahymena by zone velocity sedimentation in sucrose gradients and base ratio analysis.
mesh_terms: D002501:Centrifugation, Zonal; D004926:Escherichia coli / Q000032:analysis; D006367:HeLa Cells / Q000032:analysis; D008722:Methods; D009711:Nucleotides / Q000032:analysis; D012313:RNA / Q000032:analysis*; D012270:Ribosomes / Q000032:analysis; D013768:Tetrahymena; D014316:Tritium; D014529:Uridine / Q000378:metabolism
chemical_list: D009711:Nucleotides; D014316:Tritium; D012313:RNA; D014529:Uridine