title: Safe and useful vector systems.
mesh_terms: D010582:Bacteriophage lambda / Q000235:genetics; D001435:Bacteriophages / Q000235:genetics*; D002874:Chromosome Mapping; D003001:Cloning, Molecular; D003264:Containment of Biohazards; D004274:DNA, Recombinant; D004352:Drug Resistance, Microbial; D005796:Genes; D005822:Genetic Vectors; D010957:Plasmids
chemical_list: D004274:DNA, Recombinant