title: DNA methylation in isolated nuclei: old and new DNAs are methylated.
mesh_terms: D000630:Aminopterin / Q000494:pharmacology; D000818:Animals; D002250:Carbon Radioisotopes; D002467:Cell Nucleus / Q000378:metabolism; D002499:Centrifugation, Density Gradient; D002854:Chromatography, Paper; D004247:DNA / Q000378:metabolism*; D005347:Fibroblasts / Q000378:metabolism; D007700:Kinetics; D007739:L Cells / Q000166:cytology / Q000187:drug effects / Q000378:metabolism*; D008715:Methionine / Q000378:metabolism; D008745:Methylation; D051379:Mice; D012436:S-Adenosylmethionine / Q000378:metabolism; D013936:Thymidine / Q000378:metabolism; D014316:Tritium
chemical_list: D002250:Carbon Radioisotopes; D014316:Tritium; D012436:S-Adenosylmethionine; D004247:DNA; D008715:Methionine; D000630:Aminopterin; D013936:Thymidine