title: Preparation-sensitive conformations in ribosomal RNAs.
mesh_terms: D000818:Animals; D002645:Chickens; D004926:Escherichia coli; D005557:Formaldehyde; D008854:Microscopy, Electron; D008970:Molecular Weight; D009690:Nucleic Acid Conformation; D009691:Nucleic Acid Denaturation; D012329:RNA, Bacterial / Q000302:isolation & purification; D012335:RNA, Ribosomal / Q000302:isolation & purification
chemical_list: D012329:RNA, Bacterial; D012335:RNA, Ribosomal; D005557:Formaldehyde