Complete dependence between AG NORs and C-positive heterochromatin revealed by simultaneous AG-NOR C-banding method.
In the present paper we report a technique which permits the simultaneous observation of C-banded material and the active NORs or nucleoli in both mitotic and meiotic chromosomes of mammals and insects. The use of the present technique permits to establish a complete correlation between the C-banded positive regions and the presence of nucleoli associated to them. Some aspects related with this correspondence are discussed.
D000818:Animals; D001399:Azure Stains; D002466:Cell Nucleolus / Q000648:ultrastructure*; D002871:Chromosome Banding / Q000379:methods*; D006110:Grasshoppers; D006570:Heterochromatin / Q000648:ultrastructure*; D008540:Meiosis; D051379:Mice; D008938:Mitosis; D009697:Nucleolus Organizer Region / Q000648:ultrastructure*; D012835:Silver Nitrate; D013194:Staining and Labeling / Q000379:methods*
D001399:Azure Stains; D006570:Heterochromatin; D012835:Silver Nitrate