CD8A and Alzheimer disease: Additionally, we analyzed the connections between genes from our analyses and known AD-associated genes in functional networks specific to three tissues (blood, blood plasma, and skin) and 12 cell types (B-lymphocytes, culture condition CD8 cells, dendritic cells, eosinophils, granulocytes, keratinocytes, monocytes, mononuclear phagocytes, natural killer cells, neutrophils, skin fibroblasts, and T-lymphocytes)29.