title: Is silver stainability of nucleolar organizer regions exclusively attributable to proteins?
mesh_terms: D000328:Adult; D002466:Cell Nucleolus / Q000648:ultrastructure*; D006801:Humans; D008214:Lymphocytes / Q000648:ultrastructure; D009698:Nucleoproteins / Q000032:analysis*; D012834:Silver; D013194:Staining and Labeling
chemical_list: D009698:Nucleoproteins; D012834:Silver