Recipients of α₄β₇⁺ T cells have significantly higher numbers of α₄β₇⁺ donor T cells in their intestinal mucosa and mesenteric lymph nodes. CBA mice received transplants as described in Figure 2. Recipients of α₄β₇⁺ and α₄β₇^– T cells were killed on days 14 and 22 after BMT. Infiltrating α₄β₇⁺ T cells of donor origin were determined by multicolor flow cytometry in multiple organs. Top panels represent averages of absolute cell numbers (± SE) of α₄β₇⁺ CD4⁺ donor cells in spleen (day +14, n = 8; day +22, n = 9), peripheral lymph nodes (PLNs; day +14, n = 4; day +22, n = 4), mesenteric lymph nodes (MLNs; day +14, n = 3-4; day +22, n = 3-5), small intestine (gut, day +14, n = 3-4; day +22, n = 4-5) and liver (day +14, n = 6-7; day +22, n = 8-9). Bottom panels represent averages of absolute cell numbers of α₄β₇⁺ CD8⁺ donor cells in the above mentioned organs. *Signifies statistically significant P values.