title: Multistep transduction of tryptophan (trp) genes in Escherichia coli.
mesh_terms: D002869:Chromosome Aberrations; D002876:Chromosomes, Bacterial; D003090:Coliphages; D004171:Diploidy; D004926:Escherichia coli; D008242:Lysogeny; D011123:Polyploidy; D014161:Transduction, Genetic; D014364:Tryptophan
chemical_list: D014364:Tryptophan