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Cresyl violet-stained coronal sections through plastic-embedded brains, taken at a level showing the anterior commissure (ac), fornix columns (f), caudatoputamen (CPu), and primary olfactory cortex (PO). (A) βAPPΔ/Δ B6-Sv mouse with normal corpus callosum. (B) βAPPΔ/Δ Sv mouse with missing corpus callosum and well-developed Probst bundles (arrowhead). (Bar in A = 1 mm, applies to A and B.) See text for details.
