title: Structure of chromosome fibers and chromosomes.
mesh_terms: D002467:Cell Nucleus; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D002875:Chromosomes / Q000032:analysis; D002942:Circular Dichroism; D004247:DNA / Q000032:analysis; D006657:Histones / Q000032:analysis / Q000502:physiology; D046911:Macromolecular Substances; D008540:Meiosis; D008854:Microscopy, Electron; D009905:Optical Rotatory Dispersion; D011506:Proteins / Q000032:analysis; D013053:Spectrophotometry; D014961:X-Ray Diffraction
chemical_list: D006657:Histones; D046911:Macromolecular Substances; D011506:Proteins; D004247:DNA