Fate of parental phi X174-DNA upon infection of starved thymine-requiring host cells.

Borates Buffers Centrifugation, Density Gradient Cesium Chlorides Coliphages/analysis,metabolism Culture Media DNA Replication DNA, Viral/analysis,biosynthesis,isolation & purification,metabolism Edetic Acid Escherichia coli/growth & development,metabolism Peptide Hydrolases Phosphates Phosphorus Sodium Sucrose Sulfates Sulfur Isotopes Thymidine Thymine/metabolism Tritium

Borates Buffers Chlorides Culture Media DNA, Viral Phosphates Sulfates Sulfur Isotopes Tritium Cesium Phosphorus Sucrose Edetic Acid Sodium Peptide Hydrolases Thymine Thymidine