Study for the Treatment of Ulcerative Colitis With Adacolumn

Trial Features: * Non-drug therapy * Most patients can remain on current treatment regimen, including prednisone, budesonide and medications such as Asacol (mesalamine), Pentasa (mesalamine), Colazal (balsalazide disodium) and Dipentum (olsalazine sodium) throughout the study Components of the Study: * Study length is 24 weeks, which includes a screening visit, ten treatment visits over nine weeks and 4 follow-up appointments * Physical exams, laboratory tests and disease assessments conducted at no charge to the patient * 2:1 Randomization (treatment:sham)