Question

What are monoclonal antibodies?

an antibody produced by a single clone of cells or cell line and consisting of identical antibody molecules.

Explanation:

Monoclonal antibodies are laboratory-produced molecules engineered to serve as substitute antibodies that can restore, enhance or mimic the immune system's attack on cancer cells. They are designed to bind to antigens that are generally more numerous on the surface of cancer cells than healthy cells.

They are identical copies of one type of antibody that are made by identical cells.