DNA vaccines.
D004247:DNA; D006801:Humans; D007252:Influenza Vaccines; D007251:Influenza, Human / Q000235:genetics / Q000517:prevention & control; D014765:Viral Vaccines; D014777:Virus Diseases / Q000235:genetics* / Q000517:prevention & control
D007252:Influenza Vaccines; D014765:Viral Vaccines; D004247:DNA