MAPK8 and cystic fibrosis: Compared with the control group, the results for the groups receiving CF, CF-WE, CF-20, CF-30, and CF-40 showed significantly reduced ratios of p-ERK/ERK, p-JNK/JNK, and p-p38/p38 significantly (P < 0.05, P < 0.01), while the ratio of p-ERK/ERK was reduced the most.