The in vitro restriction of the replicative form of W.T. and mutant fd phage DNA.

Binding Sites Centrifugation, Density Gradient Centrifugation, Zonal Chromatography, Ion Exchange Coliphages DNA Replication DNA, Viral/metabolism Deoxyribonucleases/isolation & purification,metabolism Escherichia coli/enzymology Filtration Genetics, Microbial Glycerol Mutagens Mutation Nitrosoguanidines Phosphorus Isotopes Spectrophotometry Sucrose Time Factors Tritium

DNA, Viral Mutagens Nitrosoguanidines Phosphorus Isotopes Tritium Sucrose Deoxyribonucleases Glycerol