Following monoclonal antibody is directed against alpha 4 integrin (REPEAT): (A) Efalizumab, (B) Natalizumab, (C) Ibalizumab, (D) Toclizumab
Answer is B. Natalizumab is anti-integrin monoclonal antibody used in ulcerative colitis, Crohn&;s disease and multiple sclerosis.Ref: Katzung 13th ed.pg 962.