Which stimulates an immune response ONLY when it is attached to a large carrier molecule?

Question

Quizplus · Accepted Answer

Haptens are small molecules that are not immunogenic on their own but can stimulate an immune response when attached to a larger carrier molecule. The resulting complex can then be recognized as an antigen by the immune system. Epitopes are specific regions on an antigen that are recognized by antibodies or T cells. Antigens are any molecules that can be recognized by the immune system. MHC antigens are proteins on the surface of cells that present antigens to T cells. CD8 is a protein found on the surface of cytotoxic T cells.

Which Stimulates an Immune Response ONLY When It Is Attached