title: Genetic engineering. Hepatitis vaccine wins approval.
mesh_terms: D004274:DNA, Recombinant; D017325:Hepatitis B Vaccines; D006801:Humans; D014481:United States; D014486:United States Food and Drug Administration; D014761:Viral Hepatitis Vaccines
chemical_list: D004274:DNA, Recombinant; D017325:Hepatitis B Vaccines; D014761:Viral Hepatitis Vaccines