HBV S ANTIGEN PROTEIN ASSOCIATED WITH OCCULT INFECTIONS OF HBV

摘要

PURPOSE: A mutated S antigen protein relating to HBV occult infection is provided to early diagnose HBV occult infection and to effectively treat hepatitis type B. CONSTITUTION: A mutated S antigen protein of HBV(hepatitis B virus) contains 1-30 mutants of which one amino acid is substituted in an amino acid of sequence number 1. The HBV mutant is directly related to HBV occult infection. A mutated S antigen gene is used for diagnosing HBV occult infection.