title: Visualizing genetic activity of mammalian cells: looking back to the year 1972.
authors.forename: Ulrich
authors.initials: U
authors.lastname: Scheer
mesh_terms: D000818:Animals; D002466:Cell Nucleolus / Q000648:ultrastructure; D002843:Chromatin / Q000648:ultrastructure; D049673:History, 20th Century; D008099:Liver / Q000378:metabolism; D008854:Microscopy, Electron; D012335:RNA, Ribosomal / Q000096:biosynthesis*; D051381:Rats; D014158:Transcription, Genetic / Q000502:physiology*
chemical_list: D002843:Chromatin; D012335:RNA, Ribosomal