title: Preparation parameter for macromolecules.
mesh_terms: D001203:Ascomycota; D004247:DNA / Q000032:analysis*; D004269:DNA, Bacterial / Q000032:analysis*; D004926:Escherichia coli; D046911:Macromolecular Substances / Q000032:analysis*; D008837:Micrococcus; D008970:Molecular Weight; D014461:Ultracentrifugation
chemical_list: D004269:DNA, Bacterial; D046911:Macromolecular Substances; D004247:DNA