title: Evidence that HT mutant strains of bacteriophage P22 retain an altered form of substrate specificity in the formation of transducing particles in Salmonella typhimurium.
mesh_terms: D002872:Chromosome Deletion; D009154:Mutation; D012483:Salmonella Phages / Q000378:metabolism*; D012486:Salmonella typhimurium; D014161:Transduction, Genetic; D014364:Tryptophan / Q000378:metabolism*
chemical_list: D014364:Tryptophan