RACK1 and Alzheimer disease: The co‐staining of GFAP and TS/Aβ with microtubule‐associated protein 1A/1B‐light chain 3 (LC3) or phosphorylated autophagy‐related Gene 16‐Like 1 (p‐Atg16L1), two key autophagic markers, showed that microglial Rack1 knockout upregulated the staining intensity of LC3 and p‐Atg16L1 in astrocytes surrounding Aβ plaques in the AD mouse (Figure S8E–H, Supporting Information).