Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The genome of hepatitis B virus (HBV). The partially double stranded DNA (dsDNA) with the complete minus (−) strand and the incomplete (+) strand. The four open reading frames (ORFs) are shown: precore/core (preC/C) that encodes the e antigen (HBeAg) and core protein (HBcAg); P for polymerase (reverse transcriptase), PreS1/PreS2/S for surface proteins (three forms of HBsAg, small (S), middle (M) and large (L)) and X for a transcriptional trans‐activator protein
