title: Improved derivative of a phage lambda EK2 vector for cloning recombinant DNA.
mesh_terms: D002874:Chromosome Mapping; D003090:Coliphages / Q000378:metabolism; D004262:DNA Restriction Enzymes / Q000378:metabolism; D004274:DNA, Recombinant; D004279:DNA, Viral / Q000378:metabolism; D005796:Genes; D005818:Genetic Engineering; D009154:Mutation; D011995:Recombination, Genetic
chemical_list: D004274:DNA, Recombinant; D004279:DNA, Viral; D004262:DNA Restriction Enzymes