(A-D) Activated microglia (Iba1+, green) enwrap cell bodies (DAPI, blue) in the CA3 region of the hippocampus in Mfp2−/− mice (C,D) but not in control (A,B). B and D are magnifications of the highlighted area in A and C, respectively. Nuclei are stained blue with DAPI. (E) F4/80+ cells contact NeuN neurons in the brainstem of Mfp2−/− mice. (F) Magnification of E. (G – I) H&E staining and quantification in the CA3 region of hippocampus reveals preservation of neurons in Mfp2−/− mice.