The GERD + vehicle group was characterized by an increase in the MUC5AC and MUC5AB levels compared to the Sham + vehicle group; however, bombesin treatments only at doses of 0.5 and 1 mg/kg significantly decreased their levels, overlapping with omeprazole administration (positive control) (Figure 2B,C). The gene discussed is MUC5AC; the disease is gastroesophageal reflux disease.