title: Ribosomal RNA transcription in vitro is species specific.
mesh_terms: D000656:Amoeba; D000818:Animals; D002474:Cell-Free System; D012321:DNA-Directed RNA Polymerases / Q000378:metabolism*; D006801:Humans; D051379:Mice; D012318:RNA Polymerase I / Q000378:metabolism*; D012335:RNA, Ribosomal / Q000096:biosynthesis / Q000235:genetics*; D013045:Species Specificity; D014157:Transcription Factors / Q000502:physiology*; D014158:Transcription, Genetic
chemical_list: D012335:RNA, Ribosomal; D014157:Transcription Factors; D012321:DNA-Directed RNA Polymerases; D012318:RNA Polymerase I