title: Unique forms of fast-sedimenting BU lambda DNA in a superinfected E. coli lysogen.
mesh_terms: D001976:Bromouracil / Q000032:analysis; D002250:Carbon Radioisotopes; D002499:Centrifugation, Density Gradient; D003090:Coliphages / Q000032:analysis* / Q000254:growth & development / Q000378:metabolism; D004270:DNA, Circular / Q000032:analysis; D004279:DNA, Viral / Q000032:analysis* / Q000096:biosynthesis / Q000528:radiation effects; D004926:Escherichia coli; D008242:Lysogeny; D008970:Molecular Weight; D010761:Phosphorus Radioisotopes; D011830:Radiation Effects; D013941:Thymine / Q000032:analysis; D014466:Ultraviolet Rays
chemical_list: D002250:Carbon Radioisotopes; D004270:DNA, Circular; D004279:DNA, Viral; D010761:Phosphorus Radioisotopes; D001976:Bromouracil; D013941:Thymine