IL4 and cholesteryl ester measurement: As shown in Figure 3(a), when compared to the HC group, the levels of IL-9, IL-4, IL-10, and TGF-β in the serum were all significantly increased (IL-9, P = 0.004; IL-4, P = 0.000; IL-10, P = 0.006; TGF-β, P = 0.001) in CE group.