title: Specific cytological recognition of the heterochromatic segment of number 9 chromosome in man.
mesh_terms: D001345:Autoradiography; D002906:Chromosomes, Human, 6-12 and X; D003582:Cytogenetics; D004247:DNA / Q000032:analysis; D006570:Heterochromatin; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008214:Lymphocytes / Q000166:cytology; D008722:Methods; D013194:Staining and Labeling
chemical_list: D006570:Heterochromatin; D004247:DNA