Immunolabeling of NR1 in olfactory bulb, putamen, and cerebral cortex of AGS brain: (a) main olfactory bulb; (b) putamen; (c) low power of cortex; (d) cortex layers 1–3; (e) cortex layers 5–6. (a), (c–e) are from ibeAGS, and (b) is from hAGS. Gl, glomerular layer of olfactory bulb; EPl, external plexiform layer olfactory bulb; Mi, mitral cell layer of olfactory bulb; IPl, internal plexiform layer olfactory bulb; Gro, granular cell layer of olfactory bulb. Arrow indicates a periglomerular cell, numbers in (c–e) indicate the layers of cortex. Scale bar, 50 μm.