title: Relief of P2 bacteriophage amber mutant polarity by the satellite bacteriophage P4.
mesh_terms: D002874:Chromosome Mapping; D003090:Coliphages / Q000378:metabolism*; D004926:Escherichia coli / Q000378:metabolism; D005796:Genes; D005816:Genetic Complementation Test; D005838:Genotype; D009154:Mutation; D011995:Recombination, Genetic; D013045:Species Specificity; D014779:Virus Replication