title: Relative activation and inactivation phenomena between homologous and nonhomologous nucleolus organizers on the normal human G chromosomes.
mesh_terms: D002466:Cell Nucleolus; D002874:Chromosome Mapping; D002904:Chromosomes, Human, 21-22 and Y; D014644:Genetic Variation; D006570:Heterochromatin; D006801:Humans; D007621:Karyotyping; D008856:Microscopy, Fluorescence; D008938:Mitosis; D013194:Staining and Labeling
chemical_list: D006570:Heterochromatin