Tu1772 Intestinal Microbiota Is Different in Crohn's Ileitis Compared to Crohn's Colitis and Ulcerative Colitis

at the genus level demonstrate that control and preservative samples are comparable at day 0. Preservative samples remain stable at room temperature for as long as 5 days. Control samples kept in sterile water had marked shifts within 24 hours, with a significant increase in Enterobacteriaceae on day 1 that persisted throughout the remainder of the experiment and blooms of Lysinibacillus and Bacillus by days 3 and 4, respectively. (B) Principal component analysis plot demonstrates that all preservative samples (blue) cluster closely around the two baseline control samples (red: D0C1 and D0C2). Subsequent control samples increasingly deviate from day 1 (D1C1, D1C2) to day 7 (D7C1, D7C2).