title: Covalent repair of molecular recombinants in the ligase-negative amber mutant of T4 bacteriophage.
mesh_terms: D002499:Centrifugation, Density Gradient; D003090:Coliphages; D004279:DNA, Viral; D004926:Escherichia coli; D005827:Genetics, Microbial; D008025:Ligases / Q000378:metabolism; D008967:Molecular Biology; D009154:Mutation; D011995:Recombination, Genetic
chemical_list: D004279:DNA, Viral; D008025:Ligases