title: Evidence of a circadian rhythm in nucleolar components of rat superior cervical ganglion neurons with particular reference to the fibrillar centers: an ultrastructural and stereological analysis.
mesh_terms: D000818:Animals; D002466:Cell Nucleolus / Q000032:analysis / Q000648:ultrastructure*; D002940:Circadian Rhythm; D003624:Darkness; D005728:Ganglia, Sympathetic / Q000648:ultrastructure*; D008027:Light; D008297:Male; D008854:Microscopy, Electron; D009474:Neurons / Q000648:ultrastructure*; D051381:Rats; D012261:Ribonucleoproteins / Q000032:analysis
chemical_list: D012261:Ribonucleoproteins