title: [An improved Ag-I staining technic of nucleolus organizer regions].
mesh_terms: D002871:Chromosome Banding; D006801:Humans; D009697:Nucleolus Organizer Region / Q000648:ultrastructure*; D012834:Silver; D013194:Staining and Labeling / Q000379:methods*
chemical_list: D012834:Silver