Identical immune cells that are clones of a single, original parent cell are used to create Monoclonal Antibody Therapeutics (mAbs), which are antibodies. All monoclonal antibodies produced by the parent cell are identical because they are made from clones of just one parent cell, which is why they are referred to be biosimilar monoclonal antibodies.  Monoclonal antibodies (mAbs) are laboratory-produced antibodies that are designed to target and bind to specific molecules in the body.

They are created by cloning a single type of immune cell, known as a B cell, to produce identical copies of a particular antibody. Monoclonal Antibody Therapeutics are highly specific and can recognize and bind to a specific target, such as a protein or receptor, on the surface of cells or pathogens. The term "monoclonal" refers to the fact that all the antibodies produced are identical and derived from a single parent cell. This uniformity ensures consistency and precision in targeting the desired molecule or cell.