title: Structure of the 30 nm chromatin fiber.
mesh_terms: D002843:Chromatin / Q000032:analysis / Q000648:ultrastructure*; D004247:DNA / Q000032:analysis; D008854:Microscopy, Electron; D008954:Models, Biological; D009707:Nucleosomes / Q000032:analysis / Q000648:ultrastructure*; D013057:Spectrum Analysis; D014961:X-Ray Diffraction
chemical_list: D002843:Chromatin; D009707:Nucleosomes; D004247:DNA