title: The use of metrizamide density gradients to obtain a chromatin component from mammalian cells enriched in deoxyribonucleic acid-replicating regions.
mesh_terms: D002458:Cell Fractionation / Q000379:methods; D002460:Cell Line; D002499:Centrifugation, Density Gradient / Q000379:methods; D002843:Chromatin / Q000378:metabolism / Q000648:ultrastructure*; D004261:DNA Replication; D008793:Metrizamide; D008836:Micrococcal Nuclease
chemical_list: D002843:Chromatin; D008836:Micrococcal Nuclease; D008793:Metrizamide