title: Does there exist a two-operon system of control (trigger)? Some facts and the heuristic importance of the trigger.
mesh_terms: D002874:Chromosome Mapping; D003090:Coliphages / Q000378:metabolism; D004254:DNA Nucleotidyltransferases / Q000096:biosynthesis; D004261:DNA Replication; D004279:DNA, Viral / Q000378:metabolism; D004926:Escherichia coli / Q000201:enzymology; D005809:Genes, Regulator; D007109:Immunity; D008954:Models, Biological; D009154:Mutation; D009876:Operon; D013696:Temperature
chemical_list: D004279:DNA, Viral; D004254:DNA Nucleotidyltransferases