Patients in group 1 and 3 who do not improve by week 8 ( day 56) may be treated with the identical protocol used in Group 2 at the physicians discretion or receive any other therapy. These patients will be seen at day 14 and 56 as above, and have the same monitoring of dietary compliance by food diaries at days 14 and 56 and biological samples as above. Patients in group 1 or 2 in remission from FT, may receive up to 2 rescue enemas during the 8 weeks of the study from their original donor.