Chd8, Chd7 and Chd2 are expressed in the early postnatal cerebellum, hippocampus, neocortex and RMS. Sagittal sections through postnatal day 7 (P7) mouse brain (anterior to the right), hybridised with antisense RNA probes to detect Chd8 (A,A’), Chd7 (B,B’) and Chd2 (C,C’) transcripts, visualised in blue. Representative lateral (top) and medial (bottom) sections are shown for each. Higher magnification images to visualise specific expression domains in the cerebellum (Aa–Ac), hippocampus (Ba–Bc) and neocortex (Ca–Cc) are shown. Scale bars: 100 μm. CA1–3, cornu ammonis 1–3; Cb, cerebellum; DG, dentate gyrus; EGL, external granule cell layer; GL, glomerular layer; HC, hippocampus; I, cortical layer I; II–III, cortical layers II–III; IGL, internal granule cell layer; IPL, internal plexiform layer; ML, molecular layer; NC, neocortex; OB, olfactory bulb; RMS, rostral migratory stream; SGZ, subgranular zone; WM, white matter.