IL10 and colitis: In contrast, although the heat-killedform of B. coagulans BC198 also improvedthe gut barrier function (Figure 4) and reduced neutrophil and M1 macrophage infiltration(Figure 3), it wasunable to increase the level of Treg cells and IL-10 (Figure 5), which may account for itslower effectiveness in ameliorating the severity of colitis (Figure 1).