title: Phase contrast study of the dynamics of shifts of the light substance in the nucleoli of living cells.
mesh_terms: D000818:Animals; D002466:Cell Nucleolus; D006367:HeLa Cells / Q000166:cytology; D006652:Histological Techniques; D008854:Microscopy, Electron; D008858:Microscopy, Phase-Contrast; D009698:Nucleoproteins / Q000032:analysis*; D010784:Photomicrography; D012313:RNA / Q000032:analysis*
chemical_list: D009698:Nucleoproteins; D012313:RNA