title: Repression and immunity in Salmonella phages P22 and L: phage L lacks a functional secondary immunity system.
mesh_terms: D005809:Genes, Regulator; D005814:Genes, Viral; D008242:Lysogeny; D008954:Models, Biological; D011995:Recombination, Genetic; D012483:Salmonella Phages / Q000235:genetics* / Q000254:growth & development