title: Structural changes of nucleosomes in low-salt concentrations.
mesh_terms: D000818:Animals; D001482:Base Composition; D002417:Cattle; D002942:Circular Dichroism; D004247:DNA; D008274:Magnesium / Q000494:pharmacology; D009690:Nucleic Acid Conformation; D009707:Nucleosomes / Q000187:drug effects / Q000648:ultrastructure*; D009994:Osmolar Concentration; D013950:Thymus Gland / Q000648:ultrastructure*
chemical_list: D009707:Nucleosomes; D004247:DNA; D008274:Magnesium