The nucleolar organizer regions.
D000818:Animals; D001729:Bismuth; D002453:Cell Cycle; D002460:Cell Line; D002843:Chromatin / Q000648:ultrastructure; D002868:Chromosomal Proteins, Non-Histone / Q000378:metabolism; D002940:Circadian Rhythm; D004247:DNA / Q000378:metabolism; D004275:DNA, Ribosomal; D005260:Female; D006651:Histocytochemistry; D006801:Humans; D008027:Light; D008854:Microscopy, Electron; D008970:Molecular Weight; D009687:Nuclear Proteins; D009697:Nucleolus Organizer Region / Q000378:metabolism / Q000528:radiation effects / Q000648:ultrastructure; D000090243:Nucleophosmin; D009865:Oocytes / Q000648:ultrastructure; D009942:Organometallic Compounds; D010944:Plants / Q000648:ultrastructure; D012335:RNA, Ribosomal / Q000378:metabolism; D012261:Ribonucleoproteins / Q000378:metabolism; D012834:Silver; D013194:Staining and Labeling; D013644:Tartrates; D014158:Transcription, Genetic
D002843:Chromatin; D002868:Chromosomal Proteins, Non-Histone; D004275:DNA, Ribosomal; D009687:Nuclear Proteins; D009942:Organometallic Compounds; D012335:RNA, Ribosomal; D012261:Ribonucleoproteins; D013644:Tartrates; D000090243:Nucleophosmin; D012834:Silver; D004247:DNA; C013848:bismoverol; D001729:Bismuth