Hepatitis B core antigens (HBcAg) can be described using various synonyms that are commonly used within the medical field. These synonyms include hepatitis B core protein, HBc protein, hepatitis B core antigen, HBcAg, and core antigen. HBcAg refers to a viral antigen that is found within the core of the hepatitis B virus. It is a crucial component for the diagnosis and monitoring of hepatitis B infection. HBcAg synonyms are frequently utilized in scientific literature and medical discussions to refer to this important viral protein. Understanding these synonyms is vital for professionals involved in the study and treatment of hepatitis B.