How Are Monoclonal Antibodies Used? What are monoclonal antibodies, and how are they used to treat CLL? From MD Anderson Cancer Center, Drs. Zeev Estrov and Michael Keating describe the function and properties of antibodies. As Dr. Keating says, “Antibodies are key elements in everything we do in CLL because eventually most patients will develop significantly low levels of the normal gamma globulins.” Get email alerts | Subscribe on YouTube | Like on Facebook | Follow on Twitter | Follow on Google+ |