The cells that produce antibodies are plasma cells, also called effector B cells. b cells is short for B lymphocytes. Lymphocytes are a type of white blood cell and can be divided into B lymphocytes, T lymphocytes and natural killer cells.B lymphocytes are antibody-producing cells.After the B lymphocytes in the body are stimulated by antigens, such as when a person is injected with the hepatitis B vaccine, the vaccine enters the body and the B lymphocytes in the body recognize the hepatitis B surface antigen carried on the hepatitis B vaccine and are activated, transformed and differentiated into effector B cells, also plasma cells. The plasma cells produce antibodies specifically against the hepatitis B surface antigen, also known as hepatitis B surface antibodies. After antibodies are produced, when the body is exposed to the hepatitis B virus again, for example, when infected by others, the hepatitis B surface antibodies in the body will recognize the surface antigen carried by the hepatitis B virus that enters the body and act as antibodies to protect the person from hepatitis B.