Two different types of these proteins are used in sandwich assays.
Two different types of these proteins are used in sandwich assays. These proteins can be further divided into classes such as opsonins and agglutinins (uh-GLUE-tin-ins). These proteins can be classified as polyclonal or monoclonal depending on the B lymphocytes they are produced by. These proteins consist of two heavy and two light chains, arranged in a Y shape, and their variable regions interact with epitopes. For 10 points, name these proteins found in the immune system, whose primary purpose is to bind to antigens.
Two different types of these proteins are used in sandwich assays.
{antibodies} [or {antibody}; or {immunoglobulins}]