CCR6 and Alzheimer disease: In these 74 mRNAs, we observed decrease in the B cell marker Cd19 and T-helper cell type 17-related marker Ccr6. Pathway analysis using differentially expressed mRNAs revealed 12 pathways in the AD-MSC injection group and 26 pathways in the UC-MSC injection group (Supplementary Tables S3 and S4).