title: A promoter site and polarity gradients in phage S13.
mesh_terms: D001973:Bromodeoxyuridine; D002247:Carbon Isotopes; D002874:Chromosome Mapping; D003090:Coliphages / Q000032:analysis / Q000254:growth & development / Q000302:isolation & purification / Q000378:metabolism*; D003433:Crosses, Genetic; D004591:Electrophoresis, Polyacrylamide Gel; D004926:Escherichia coli; D005796:Genes; D005816:Genetic Complementation Test; D006898:Hydroxylamines; D008242:Lysogeny; D008970:Molecular Weight; D009153:Mutagens; D009154:Mutation; D009573:Nitrites; D009604:Nitrosoguanidines; D012763:Shigella flexneri; D014316:Tritium; D014764:Viral Proteins / Q000032:analysis / Q000096:biosynthesis*
chemical_list: D002247:Carbon Isotopes; D006898:Hydroxylamines; D009153:Mutagens; D009573:Nitrites; D009604:Nitrosoguanidines; D014764:Viral Proteins; D014316:Tritium; D001973:Bromodeoxyuridine