CD4 and Alzheimer disease: Analysis with the CIBERSORT program revealed that the distribution of resting dendritic cells (p < 0.001), activated memory CD4 T cells (p = 0.009), M0 macrophages (p = 0.004), M2 macrophages (p = 0.004), and resting mast cells (p = 0.001) had statistical significance in AD samples (Figure 5A).