title: Satellite association and variations in length of the nucleolar constriction of normal and variant human G chromosomes.
mesh_terms: D002466:Cell Nucleolus / Q000648:ultrastructure*; D002869:Chromosome Aberrations; D002904:Chromosomes, Human, 21-22 and Y / Q000648:ultrastructure*; D004247:DNA; D006570:Heterochromatin; D006801:Humans; D007621:Karyotyping; D008938:Mitosis; D012270:Ribosomes
chemical_list: D006570:Heterochromatin; D004247:DNA