Isolation of DNA segments containing promoters from bacteriophage T3 DNA.

Base Sequence Centrifugation, Density Gradient Chromatography, Ion Exchange Coliphages/analysis,metabolism DNA Viruses/analysis DNA, Bacterial/metabolism DNA, Viral/isolation & purification,metabolism DNA-Directed RNA Polymerases/metabolism Drug Stability Electrophoresis, Polyacrylamide Gel Endonucleases Escherichia coli/analysis,metabolism Haemophilus/enzymology Nucleic Acid Hybridization Osmolar Concentration Phosphorus Radioisotopes RNA, Bacterial/biosynthesis Templates, Genetic Transcription, Genetic Tritium

DNA, Bacterial DNA, Viral Phosphorus Radioisotopes RNA, Bacterial Tritium DNA-Directed RNA Polymerases Endonucleases