title: Positive and negative control of transcription in bacteriophage lambda.
mesh_terms: D004279:DNA, Viral / Q000096:biosynthesis; D005809:Genes, Regulator; D005815:Genetic Code; D012367:RNA, Viral / Q000096:biosynthesis; D014158:Transcription, Genetic
chemical_list: D004279:DNA, Viral; D012367:RNA, Viral