title: Specific compact selfpacking of the ribosomal 23 S RNA.
mesh_terms: D002499:Centrifugation, Density Gradient; D004926:Escherichia coli / Q000648:ultrastructure; D008854:Microscopy, Electron; D009690:Nucleic Acid Conformation; D012335:RNA, Ribosomal; D012270:Ribosomes / Q000648:ultrastructure
chemical_list: D012335:RNA, Ribosomal