title: Changes in the structure of rat liver DNA in relation to age.
mesh_terms: D000375:Aging; D000818:Animals; D002417:Cattle; D002467:Cell Nucleus / Q000378:metabolism; D002499:Centrifugation, Density Gradient; D004247:DNA / Q000032:analysis / Q000378:metabolism* / Q000494:pharmacology; D004277:DNA, Single-Stranded; D003851:Deoxyribonucleases / Q000378:metabolism / Q000494:pharmacology; D008099:Liver / Q000166:cytology / Q000201:enzymology / Q000254:growth & development* / Q000378:metabolism; D008297:Male; D008970:Molecular Weight; D009691:Nucleic Acid Denaturation; D011402:Pronase / Q000494:pharmacology; D051381:Rats; D012260:Ribonucleases / Q000494:pharmacology; D013950:Thymus Gland; D014783:Viscosity
chemical_list: D004277:DNA, Single-Stranded; D004247:DNA; D003851:Deoxyribonucleases; D012260:Ribonucleases; D011402:Pronase