title: PhiX174 replicative form DNA replication, origin and direction.
mesh_terms: D002874:Chromosome Mapping; D003090:Coliphages; D004261:DNA Replication; D004926:Escherichia coli; D005815:Genetic Code; D005827:Genetics, Microbial; D005838:Genotype; D009154:Mutation; D011523:Protoplasts; D014779:Virus Replication