So what exactly is a monoclonal antibody? So let's imagine a collection of plasma cells and all these plasma cells are identical. Now if we have some type of infectious agent, some type of antigen inside the body, then all these identical integral plasma cells will begin to produce identical antibodies for that specific antigen. And all these identical antibodies will bind to a specific region, a specific epitope on that antigen. And this collection of identical antibodies that bind to a single epitope on that antigen are known as monoclonal antibodies. And this is in contrast to polyclonal antibodies because as we said, polyclonal antibodies are produced by different types of plasma cells.