ARG1 and Alzheimer disease: In the AD group mice, the CD206-Iba1 colocalization (P < 0.05 in the Ent, Figure 5(f)) and Arg1-Iba1 colocalization (P < 0.01 in the PtA and Ent, Figures 5(g) and 5(h)) were significantly reduced compared with those in the WT group.