What is the difference between hepatitis B immunoglobulin and gamma globulin?

Gamma globulin is a protein preparation in healthy human body, which can enhance the immunity of the body, usually can prevent and infectious hepatitis, but can not prevent mother-to-child transmission; for hepatitis B immunoglobulin, it is a passive preparation to prevent hepatitis B virus from invading the body, mainly selected from the blood in healthy human body.