Relationship between fecal markers and diagnosis of GI-GVHD. The panels show concentration of calprotectin (A), elasatse (B), and alpha1-antitrypsin (C) by clinic in this order: patients with no GI symptoms, patients with diarrhea not related to GVHD, patients with stage 1 GI-GVHD, patients with stage 2 GI-GVHD, and patients with stage 3 GI-GVHD. Box and whisker plots display the median, 25th, and 75th percentile of the distribution (box), and whiskers extend to the most extreme data point which is no more than 1.5 times the interquartile range from the box.