Bacteriophage T4 gene expression. Evidence for two classes of prereplicative cistrons.

Amino Acids Carbon Radioisotopes Chloramphenicol/pharmacology Coliphages/drug effects,metabolism DNA, Viral/biosynthesis Electrophoresis, Polyacrylamide Gel Escherichia coli/drug effects,metabolism,radiation effects Genes, Regulator Kinetics Models, Biological Mutation Protein Biosynthesis/drug effects Radiation Effects Rifampin/pharmacology Sodium Dodecyl Sulfate Time Factors Transcription, Genetic/drug effects Tritium Ultraviolet Rays Uridine Viral Proteins/biosynthesis Virus Replication

Amino Acids Carbon Radioisotopes DNA, Viral Viral Proteins Tritium Sodium Dodecyl Sulfate Chloramphenicol Rifampin Uridine