Smallpox conquered, vaccinia directed against hepatitis B.
D004274:DNA, Recombinant / Q000276:immunology*; D006509:Hepatitis B / Q000517:prevention & control*; D006515:Hepatitis B virus / Q000235:genetics* / Q000276:immunology; D006801:Humans; D014611:Vaccination; D014616:Vaccinia virus / Q000276:immunology*
D004274:DNA, Recombinant