The question is how do we mass produce it to study it? Well, inside our body and inside the bodies of different organisms, we have many different types of plasma cells and each one of the plasma cells produces a specific type of antibody that binds to a specific antigen. Now, theoretically, to basically mass produce a specific type of antibody, what we would have to do is take out the different types of plasma cells from our body or from the body of some other organism, and then out. Of that collection of plasma cells. Isolate those plasma cells that we actually want to study because those plasma cells produce the antibody of interest. Now, once we isolate those specific plasma cells, we can then divide those plasma cells many times via mitosis.