Antibody to one site
Monoclonal antibodies (mab or moab) are monospecific antibodies that are the same because they are made by identical immune cells that are all clones of a special parent cell.
Monoclonal antibodies have monovalent affinity. That is, they bind to the same epitope/site. These can be used in treating cancer
, autoimmune diseases, like rheumatoid arthritis
, and in diagnostic tests, like western blot.