A mutant of bacteriophage øX174 which infects E. coli K12 strains. I. Isolation and partial characterization of øXtB.

Carbon Isotopes Centrifugation, Density Gradient Coliphages/analysis,growth & development,isolation & purification DNA Viruses/analysis,growth & development,isolation & purification DNA, Bacterial/analysis DNA, Viral/analysis Escherichia coli/analysis Immune Sera Lysogeny Microscopy, Electron Mutation Recombination, Genetic Spheroplasts Temperature Thymidine/metabolism Thymine/metabolism Tritium Viral Plaque Assay Viral Proteins Virus Replication

Carbon Isotopes DNA, Bacterial DNA, Viral Immune Sera Viral Proteins Tritium Thymine Thymidine