title: High resolution electron microscopic studies of genetic regulation.
mesh_terms: D001483:Base Sequence; D003090:Coliphages / Q000378:metabolism; D004269:DNA, Bacterial / Q000378:metabolism*; D004279:DNA, Viral / Q000378:metabolism*; D012321:DNA-Directed RNA Polymerases / Q000378:metabolism*; D004926:Escherichia coli; D005809:Genes, Regulator; D007785:Lactose / Q000378:metabolism*; D008854:Microscopy, Electron; D008970:Molecular Weight; D009690:Nucleic Acid Conformation; D009876:Operon; D011485:Protein Binding; D013696:Temperature
chemical_list: D004269:DNA, Bacterial; D004279:DNA, Viral; D012321:DNA-Directed RNA Polymerases; D007785:Lactose