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Levels of 70-kDa FITC dextran (●) and 4-kDa FITC dextran (×) in luminal contents of stomach (S), five small intestinal segments, caecum (Cc) and two colonic segments measured directly after gavage (0 min) and 15, 30 and 45 min and 1, 1.5, 2, 3 and 8 h after gavage. Each dot represents one mouse.
