title: Influence of the intragenic localization of amber mutants of bacteriophage T4B.
mesh_terms: D002874:Chromosome Mapping; D003090:Coliphages; D003433:Crosses, Genetic; D004267:DNA Viruses; D005796:Genes; D005815:Genetic Code; D009154:Mutation; D010443:Peptide Chain Termination, Translational