title: Approved HV1 and HV2 systems.
mesh_terms: D001412:Bacillus subtilis / Q000235:genetics; D001435:Bacteriophages / Q000235:genetics; D004274:DNA, Recombinant; D005822:Genetic Vectors; D010957:Plasmids; D012441:Saccharomyces cerevisiae / Q000235:genetics
chemical_list: D004274:DNA, Recombinant