Comparing day 0 with day 7, as expected, the ulcers decreased in size due to mucosal healing (stomach: − 22.8% with HSA, − 19% without HSA; rectum: − 50.8% with HSA, − 49.5% without HSA, see Tables 1, 2, and Fig. 2 for details). This evidence concerns the gene ALB and ulcer disease.