title: New mutants of bacteriophage lambda with a specific defect in excision from the host chromosome.
mesh_terms: D002874:Chromosome Mapping; D002876:Chromosomes, Bacterial; D003090:Coliphages; D004279:DNA, Viral; D004926:Escherichia coli; D008242:Lysogeny; D009154:Mutation
chemical_list: D004279:DNA, Viral