HBsAg

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HBsAg

HBsAg (pronounced as H-B-S-Ag), also known as Hepatitis B surface antigen, is a protein that is produced by the Hepatitis B virus. The presence of HBsAg in the blood typically indicates a current Hepatitis B infection.

Etymology

The term "HBsAg" is an abbreviation for Hepatitis B surface Antigen. "Hepatitis" comes from the Greek words "hepar" meaning liver, and "itis" meaning inflammation. "B" refers to the type of virus that causes this particular form of hepatitis. "Surface antigen" refers to the outer surface of the virus, which triggers an immune response in the host organism.

Related Terms

  • Hepatitis: A general term referring to inflammation of the liver, which can be caused by various factors including viruses, toxins, and autoimmune diseases.
  • Hepatitis B virus: The specific virus that causes Hepatitis B.
  • Hepatitis B: A potentially life-threatening liver infection caused by the Hepatitis B virus. It is a major global health problem and the most serious type of viral hepatitis.
  • Antigen: A substance that triggers an immune response, especially the production of antibodies.
  • Antibody: A blood protein produced in response to and counteracting a specific antigen. Antibodies combine chemically with substances that the body recognizes as alien, such as bacteria, viruses, and foreign substances in the blood.

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