Beneficial bacteria and budesonide reduce mouse mast cell protease-1 levels in serum of chronic asthmatic mice. Mouse serum was isolated on day 56 and mouse mast cell protease-1 (mMCP-1) levels were measured by ELISA. Data is shown as mean ± SEM, n = 5-6mice/group. #Statistically significant difference (p < 0.05) compared to the OVA/Sal-PBS group. ¤Statistically significant difference (p < 0.05) compared to the OVA/OVA-PBS group. BUD = budesonide.