AIF1 and amyloidosis: As microglia are the primary immune cells responding to amyloidosis, we performed immunofluorescence staining for the microglial marker IBA1 in the sections of the somatosensory cortex and dentate gyrus of the hippocampus in 12‐month‐old AppNL‐G‐F mice fed a control or PCS diet to assess microglial reaction to plaques as a correlate linking altered DNAm in response to plaque area.