title: Prophage P1, and extrachromosomal replication unit.
mesh_terms: D002499:Centrifugation, Density Gradient; D002875:Chromosomes; D002876:Chromosomes, Bacterial; D003090:Coliphages; D004261:DNA Replication; D004269:DNA, Bacterial / Q000032:analysis*; D004279:DNA, Viral / Q000032:analysis*; D004926:Escherichia coli; D005111:Extrachromosomal Inheritance; D005796:Genes; D005827:Genetics, Microbial; D006824:Hybridization, Genetic; D008242:Lysogeny; D008854:Microscopy, Electron; D009154:Mutation; D009691:Nucleic Acid Denaturation; D011995:Recombination, Genetic; D014779:Virus Replication
chemical_list: D004269:DNA, Bacterial; D004279:DNA, Viral