The shell part of the hepatitis B virus contains the surface antigen HBsAg (term: hepatitis B surface antigen), the core part contains the core antigen HBcAg, the e antigen is HBEAg (medical term: hepatitis B E antigen) and the deoxyribonucleic acid of the hepatitis B virus is HBV-DNA, deoxygenated RNA polymerase is DNA-P.
After a person is infected with hepatitis B virus, a large amount of surface antigens are often left in the blood, resulting in surface antigenemia. The surface antigen itself is not the complete hepatitis B virus, but the shell of the hepatitis B virus. It is not infectious but has antigenicity. It is only one of the signs of hepatitis B virus infection. It can indicate that you have been infected with HBV in the past, or are currently infected with HBV.
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