Hepatitis B virus (HBV) is a human pathogen, causing serious liver disease. The HBV surface protein antigens (HBsAg) are comprised of three carboxyl co terminal HBs proteins termed large (LHBs), middle (MHBs) and small (SHBs, also called major) protein. LHBs and MHBs also share the highly hydrophobic, repetitive, membrane spanning S domain. In addition, MHBs has a 55 amino acid region called preS2.
This lyophilized preparation is stable at 2-8℃, but should be kept at
-20℃ for long term storage, preferably desiccated. Upon reconstitution, the preparation is stable for up to one week at 2-8℃. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20℃ to -70℃.
Avoid repeated freeze/thaw cycles.