title: Two new genetic assays for noninfectious fragments of phiX174 DNA.
mesh_terms: D003090:Coliphages / Q000032:analysis* / Q000254:growth & development / Q000378:metabolism; D004261:DNA Replication; D004270:DNA, Circular / Q000096:biosynthesis; D004279:DNA, Viral / Q000032:analysis / Q000096:biosynthesis; D004926:Escherichia coli; D009154:Mutation; D009693:Nucleic Acid Hybridization; D013104:Spheroplasts; D013696:Temperature
chemical_list: D004270:DNA, Circular; D004279:DNA, Viral