title: The isolation of non-excluding mutants of phage P22.
mesh_terms: D000941:Antigens; D005827:Genetics, Microbial; D008242:Lysogeny; D009154:Mutation; D012483:Salmonella Phages / Q000302:isolation & purification*; D012486:Salmonella typhimurium / Q000276:immunology; D014466:Ultraviolet Rays
chemical_list: D000941:Antigens