title: Molecular organization of DNA in chromosomes.
mesh_terms: D000818:Animals; D002875:Chromosomes / Q000648:ultrastructure*; D006224:Cricetinae; D004247:DNA; D008856:Microscopy, Fluorescence; D009690:Nucleic Acid Conformation; D012455:Salamandridae; D013056:Spectrophotometry, Ultraviolet
chemical_list: D004247:DNA