title: Characteristics of lambda p4, a lambda derivative containing 9 per cent excess DNA.
mesh_terms: D002499:Centrifugation, Density Gradient; D003090:Coliphages / Q000032:analysis / Q000187:drug effects / Q000254:growth & development*; D003433:Crosses, Genetic; D004279:DNA, Viral / Q000032:analysis; D004492:Edetic Acid / Q000494:pharmacology; D004926:Escherichia coli; D005827:Genetics, Microbial; D006358:Hot Temperature; D008242:Lysogeny; D009024:Morphogenesis; D009154:Mutation; D011995:Recombination, Genetic; D010948:Viral Plaque Assay; D014779:Virus Replication
chemical_list: D004279:DNA, Viral; D004492:Edetic Acid