The antibodies are :

Explanation

Antibodies are members of a class of proteins known as immunoglobulins. Immunoglobulins are glycoproteins in the immunoglobulin superfamily. The terms 'antibody' and 'immunoglobulin' are often used interchangeably. They are found in blood and tissue fluids, as well as in many secretions. In terms of structure, they are globulins (in the region of protein electrophoresis). They are synthesized and secreted by plasma cells derived from the B cells of the immune system.