title: Genetic expression in whole cells of heterozygous replicative-form molecules of phi X174.
mesh_terms: D002499:Centrifugation, Density Gradient; D003090:Coliphages; D003596:Cytosine / Q000378:metabolism; D004260:DNA Repair; D004261:DNA Replication; D006579:Heterozygote; D009154:Mutation; D014316:Tritium; D014779:Virus Replication
chemical_list: D014316:Tritium; D003596:Cytosine