9 PHARMACEUTICAL COMPOSITION COMPRISING AN ANTI- CD6 MONOCLONAL ANTIBODY USEFUL FOR THE DIAGNOSIS AND TREATMENT OF RHEUMATOID ARTHRITIS. 5 ABSTRACT THE PRESENT INVENTION IS RELATED TO THE BRANCH OF IMMUNOLOGY AND PARTICULARLY WITH 10 THE GENERATION OF PHARMACEUTICAL COMPOSITIONS CONTAINING A HUMANIZED MONOCLONAL ANTIBODY RECOGNIZING THE LEUKOCYTE DIFFERENTIATION ANTIGEN CD6. ACCORDINGLY WITH THAT STATEMENT, THE PURPOSE OF THIS INVENTION IS TO PROVIDE PHARMACEUTICAL COMPOSITIONS WHICH CONTAIN A HUMANIZED ANTI-CD6 MONOCLONAL ANTIBODY FOR THE DIAGNOSIS AND TREATMENT OF AUTOIMMUNE DISEASES, PARTICULARLY THE RHEUMATOID 1 5 ARTHRITIS. FIG - 1