title: Modification of biological activity of DNA in vitro by specific methylation.
mesh_terms: D001435:Bacteriophages; D004269:DNA, Bacterial; D004926:Escherichia coli / Q000201:enzymology; D005815:Genetic Code; D005827:Genetics, Microbial; D008745:Methylation; D014316:Tritium
chemical_list: D004269:DNA, Bacterial; D014316:Tritium