bibliografia http://images.google.pt/imgres?imgurl=http://evu nix.uevora.pt/~sinogas/TRABALHOS/2001/Imun o01_Hepatite%2520B_files/image009.jpg&imgre furl=http://evunix.uevora.pt/~sinogas/TRABALH OS/2001/Imuno01_Hepatite%2520B.htm&h=348 &w=456&sz=30&hl=pt- PT&start=7&tbnid=jhEsXVKF9TkE8M:&tbnh=98 &tbnw=128&prev=/images%3Fq%3Dhepatite%2 BB%26gbv%3D2%26hl%3Dpt-PT%26sa%3DG