title: A biological assay for polynucleotide ligase: recovery of marker activity in DNA-transformation.
mesh_terms: D001681:Biological Assay; D003090:Coliphages; D004247:DNA / Q000378:metabolism; D004926:Escherichia coli / Q000201:enzymology*; D008025:Ligases / Q000032:analysis*; D008722:Methods; D011119:Polynucleotides; D014170:Transformation, Genetic
chemical_list: D011119:Polynucleotides; D004247:DNA; D008025:Ligases