title: A direct approach to the structure of eukaryotic chromosomes.
mesh_terms: D000818:Animals; D002467:Cell Nucleus / Q000648:ultrastructure; D002469:Cell Separation / Q000379:methods; D002843:Chromatin / Q000302:isolation & purification; D002875:Chromosomes / Q000648:ultrastructure*; D004331:Drosophila melanogaster / Q000648:ultrastructure; D005057:Eukaryotic Cells / Q000648:ultrastructure; D006801:Humans; D007399:Interphase; D008677:Metaphase; D008853:Microscopy / Q000379:methods; D012469:Salivary Glands / Q000648:ultrastructure
chemical_list: D002843:Chromatin