Recombinant HBsAg adw antigen was mutated by replacing the Proline residue at position 142 with Serine.HBsAgRecombinant HBsAg adw antigen was mutated by replacing the Proline residue at position 142 with Serine.; Sterile Filtered solution containing 20mM Na2HPO4, 0.03M NaCl and 0.001% Thimerosal, pH-7.4.